Jefferies Financial (JEF) 10-Q 9 Jul 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	May 31, 2019	Jul. 02, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	May 31, 2019
Entity Registrant Name	JEFFERIES FINANCIAL GROUP INC.
Entity Central Index Key	0000096223
Amendment Flag	false
Current Fiscal Year End Date	--11-30
Entity Filer Category	Large Accelerated Filer
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		300,002,794

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands		May 31, 2019	Nov. 30, 2018
ASSETS
Cash and cash equivalents		$ 5,393,737	$ 5,258,809
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations		543,429	707,960
Financial instruments owned, at fair value (including securities pledged of $12,176,602 and $13,059,802):
Trading assets, at fair value		17,178,584	17,463,256
Available for sale securities		0	1,409,886
Total financial instruments owned		17,178,584	18,873,142
Loans to and investments in associated companies		2,415,894	2,417,332
Securities borrowed		7,713,886	6,538,212
Securities purchased under agreements to resell		4,027,332	2,785,758
Receivables		6,911,314	6,287,401
Intangible assets, net and goodwill		1,882,930	1,890,131
Deferred tax asset, net		471,506	512,789
Other assets		1,985,328	1,859,561
Total assets	[1]	48,523,940	47,131,095
LIABILITIES
Short-term borrowings		510,435	387,492
Trading liabilities, at fair value		10,113,390	9,478,946
Securities loaned		2,327,805	1,838,688
Securities sold under agreements to repurchase		8,861,457	8,643,069
Other secured financings		1,799,569	1,534,271
Payables, expense accruals and other liabilities		7,029,001	7,407,030
Long-term debt		7,860,984	7,617,563
Total liabilities	[1]	38,502,641	36,907,059
Commitments and contingencies
MEZZANINE EQUITY
Redeemable noncontrolling interests		18,938	19,779
Mandatorily redeemable convertible preferred shares		125,000	125,000
EQUITY
Common shares, par value $1 per share, authorized 600,000,000 shares; 290,686,834 and 307,515,472 shares issued and outstanding, after deducting 26,360,042 and 109,460,774 shares held in treasury		290,687	307,515
Additional paid-in capital		3,559,156	3,854,847
Accumulated other comprehensive income (loss)		(242,824)	288,286
Retained earnings		6,246,852	5,610,218
Total Jefferies Financial Group Inc. shareholders’ equity		9,853,871	10,060,866
Noncontrolling interests		23,490	18,391
Total equity		9,877,361	10,079,257
Total		$ 48,523,940	$ 47,131,095
[1]	Total assets include assets related to variable interest entities of $587.6 million and $704.4 million at May 31, 2019 and November 30, 2018 , respectively, and Total liabilities include liabilities related to variable interest entities of $1,800.9 million and $1,535.8 million at May 31, 2019 and November 30, 2018 , respectively. See Note 8 for additional information related to variable interest entities.

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands		May 31, 2019	Nov. 30, 2018
ASSETS
Securities pledged		$ 12,176,602	$ 13,059,802
Stockholders' Equity Attributable to Parent [Abstract]
Common shares, par value (in dollars per share)		$ 1	$ 1
Common shares, authorized (in shares)		600,000,000	600,000,000
Common shares, issued and outstanding after deducting shares held in treasury (in shares)		290,686,834	307,515,472
Treasury stock (in shares)		26,360,042	109,460,774
Assets	[1]	$ 48,523,940	$ 47,131,095
Liabilities	[1]	38,502,641	36,907,059
Variable interest entities
Assets		587,600	704,400
Liabilities		$ 1,800,900	$ 1,535,800
[1]	Total assets include assets related to variable interest entities of $587.6 million and $704.4 million at May 31, 2019 and November 30, 2018 , respectively, and Total liabilities include liabilities related to variable interest entities of $1,800.9 million and $1,535.8 million at May 31, 2019 and November 30, 2018 , respectively. See Note 8 for additional information related to variable interest entities.

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Revenues:
Revenues	$ 1,510,371	$ 1,243,826	$ 2,705,383	$ 2,404,937
Interest expense	23,138	24,279	46,156	45,777
Net revenues	1,101,657	911,159	1,930,100	1,806,594
Expenses:
Compensation and benefits	510,560	478,515	920,152	968,174
Cost of sales	80,415	90,690	147,336	172,625
Floor brokerage and clearing fees	60,387	45,046	112,255	87,222
Depreciation and amortization	36,786	31,905	70,720	60,065
Selling, general and other expenses	229,062	236,562	450,168	462,906
Total expenses	940,348	906,997	1,746,787	1,796,769
Income from continuing operations before income taxes and income related to associated companies	161,309	4,162	183,313	9,825
Income related to associated companies	22,170	33,353	49,483	65,453
Income from continuing operations before income taxes	183,479	37,515	232,796	75,278
Income tax provision (benefit)	(488,797)	9,598	(486,495)	(38,831)
Income from continuing operations	672,276	27,917	719,291	114,109
Income from discontinued operations, net of income tax provision of $0, $31,111, $0 and $47,045	0	77,106	0	130,063
Gain on disposal of discontinued operations, net of income tax provision of $0, $229,553, $0 and $229,553	0	643,921	0	643,921
Net income	672,276	748,944	719,291	888,093
Net (income) loss attributable to the noncontrolling interests	191	(136)	(875)	1,208
Net income attributable to the redeemable noncontrolling interests	(427)	(22,108)	(289)	(36,904)
Preferred stock dividends	(1,276)	(1,171)	(2,552)	(2,343)
Net income attributable to Jefferies Financial Group Inc. common shareholders	$ 670,764	$ 725,529	$ 715,575	$ 850,054
Basic earnings per common share attributable to Jefferies Financial Group Inc. common shareholders:
Income from continuing operations (in dollars per share)	$ 2.17	$ 0.08	$ 2.29	$ 0.31
Income from discontinued operations (in dollars per share)	0	0.15	0	0.26
Gain on disposal of discontinued operations (in dollars per share)	0	1.82	0	1.79
Net income (in dollars per share)	2.17	2.05	2.29	2.36
Diluted earnings per common share attributable to Jefferies Financial Group Inc. common shareholders:
Income from continuing operations (in dollars per share)	2.14	0.08	2.25	0.31
Income from discontinued operations (in dollars per share)	0	0.15	0	0.25
Gain on disposal of discontinued operations (in dollars per share)	0	1.80	0	1.77
Net income (in dollars per share)	$ 2.14	$ 2.03	$ 2.25	$ 2.33
Amounts attributable to Jefferies Financial Group Inc. common shareholders:
Income from continuing operations, net of taxes	$ 670,764	$ 27,193	$ 715,575	$ 113,211
Income from discontinued operations, net of taxes	0	54,415	0	92,922
Gain on disposal of discontinued operations, net of taxes	0	643,921	0	643,921
Net income attributable to Jefferies Financial Group Inc. common shareholders	670,764	725,529	715,575	850,054
Commissions and other fees
Revenues:
Revenues	159,685	157,704	306,819	305,606
Principal transactions
Revenues:
Revenues	240,189	53,755	486,371	199,418
Investment banking
Revenues:
Revenues	430,087	500,297	715,683	940,288
Interest income
Revenues:
Revenues	445,967	327,314	832,811	602,536
Manufacturing revenues
Revenues:
Revenues	90,237	114,735	165,662	213,100
Other
Revenues:
Revenues	144,206	90,021	198,037	143,989
Jefferies Group
Revenues:
Interest expense	$ 408,714	$ 332,667	$ 775,283	$ 598,343

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Income Statement [Abstract]
Income tax provision	$ 0	$ 31,111	$ 0	$ 47,045
Gain on disposal of discontinued operations, income tax provision	$ 0	$ 229,553	$ 0	$ 229,553

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 672,276	$ 748,944	$ 719,291	$ 888,093
Other comprehensive income (loss):
Net unrealized holding gains (losses) on investments arising during the period, net of income tax provision (benefit) of $31, $227, $138 and $(143)	62	818	379	(408)
Less: reclassification adjustment for net (gains) losses included in net income, net of income tax provision (benefit) of $(544,677), $42, $(545,054) and $37	(544,307)	(118)	(543,178)	(103)
Net change in unrealized holding gains (losses) on investments, net of income tax provision (benefit) of $544,708, $185, $545,192 and $(180)	(544,245)	700	(542,799)	(511)
Net unrealized foreign exchange gains (losses) arising during the period, net of income tax provision (benefit) of $(10,439), $(2,719), $(2,717) and $(793)	(40,147)	(49,310)	(9,193)	(31,407)
Less: reclassification adjustment for foreign exchange (gains) losses included in net income, net of income tax provision (benefit) of $0, $(16), $0 and $(16)	0	(20,459)	0	(20,459)
Net change in unrealized foreign exchange gains (losses), net of income tax provision (benefit) of $(10,439), $(2,703), $(2,717) and $(777)	(40,147)	(69,769)	(9,193)	(51,866)
Net unrealized gains (losses) on instrument specific credit risk arising during the period, net of income tax provision (benefit) of $858, $8,875, $6,807 and $4,241	2,616	26,287	20,151	14,718
Less: reclassification adjustment for instrument specific credit risk (gains) losses included in net income, net of income tax provision (benefit) of $(67), $78, $(166) and $78	199	(270)	493	(270)
Net change in unrealized instrument specific credit risk gains (losses), net of income tax provision (benefit) of $925, $8,797, $6,973 and $4,163	2,815	26,017	20,644	14,448
Net unrealized gains (losses) on cash flow hedges arising during the period, net of income tax provision (benefit) of $86, $(721), $0 and $513	251	251	0	1,499
Less: reclassification adjustment for cash flow hedges (gains) losses included in net income (loss), net of income tax provision (benefit) of $161, $0, $161 and $0	(470)	0	(470)	0
Net change in unrealized cash flow hedges gains (losses), net of income tax provision (benefit) of $(75), $(721), $(161) and $513	(219)	251	(470)	1,499
Net pension gains (losses) arising during the period, net of income tax provision (benefit) of $0, $0, $0 and $0	0	0	0	0
Reclassification adjustment for pension (gains) losses included in net income, net of income tax provision (benefit) of $(122), $(188), $(241) and $(339)	353	457	708	6,263
Net change in pension liability, net of income tax provision (benefit) of $122, $188, $241 and $339	353	457	708	6,263
Other comprehensive loss, net of income taxes	(581,443)	(42,344)	(531,110)	(30,167)
Comprehensive income	90,833	706,600	188,181	857,926
Comprehensive (income) loss attributable to the noncontrolling interests	191	(136)	(875)	1,208
Comprehensive (income) loss attributable to the redeemable noncontrolling interests	(427)	(22,108)	(289)	(36,904)
Preferred stock dividends	(1,276)	(1,171)	(2,552)	(2,343)
Comprehensive income attributable to Jefferies Financial Group Inc. common shareholders	$ 89,321	$ 683,185	$ 184,465	$ 819,887

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net unrealized holding gains (losses) on investments arising during the period, tax provision (benefit)	$ 31	$ 227	$ 138	$ (143)
Less: reclassification adjustment for net (gains) losses included in net income (loss), tax provision (benefit)	(544,677)	42	(545,054)	37
Net change in unrealized holding gains (losses) on investments, tax provision (benefit)	544,708	185	545,192	(180)
Net unrealized foreign exchange gains (losses) arising during the period, tax provision (benefit)	(10,439)	(2,719)	(2,717)	(793)
Less: reclassification adjustment for foreign exchange (gains) losses included in net income (loss), tax provision (benefit)	0	(16)	0	(16)
Net change in unrealized foreign exchange gains (losses), tax provision (benefit)	(10,439)	(2,703)	(2,717)	(777)
Net unrealized gains (losses) on instrument specific credit risk arising during the period, tax provision (benefit)	858	8,875	6,807	4,241
Less: reclassification adjustment for instrument specific credit risk (gains) losses included in net income (loss), tax provision (benefit)	(67)	78	(166)	78
Net change in unrealized instrument specific credit risk gains (losses), tax provision (benefit)	925	8,797	6,973	4,163
Net unrealized gains (losses) on cash flow hedges arising during the period, net of income tax provision (benefit) of $(86) and $1,234	86	(721)	0	513
Less: reclassification adjustment for cash flow hedges (gains) losses included in net income (loss), tax provision (benefit)	161	0	161	0
Net change in unrealized cash flow hedges gains (losses), tax provision (benefit)	(75)	(721)	(161)	513
Net pension gains (losses) arising during the period, tax provision (benefit)	0	0	0	0
Less: reclassification adjustment for pension (gains) losses included in net income (loss), tax provision (benefit)	(122)	(188)	(241)	(339)
Net change in pension liability, tax provision (benefit)	$ 122	$ 188	$ 241	$ 339

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	May 31, 2019	Jun. 30, 2018
Net cash flows from operating activities:
Net income	$ 719,291	$ 888,093
Adjustments to reconcile net income to net cash used for operations:
Pre-tax income from discontinued operations, including gain on disposal	0	(1,050,582)
Deferred income tax provision	40,388	203,493
Recognition of accumulated other comprehensive income lodged taxes	(544,583)	0
Depreciation and amortization of property, equipment and leasehold improvements	64,428	52,516
Other amortization	(13,669)	(15,748)
Share-based compensation	24,886	25,198
Provision for doubtful accounts	13,098	16,647
Income related to associated companies	(103,804)	(90,287)
Distributions from associated companies	150,273	42,952
Net losses related to property and equipment, and other assets	2,761	9,006
Net change in:
Securities deposited with clearing and depository organizations	(3)	64,880
Trading assets	251,972	(2,245,744)
Securities borrowed	(1,192,513)	97,924
Securities purchased under agreements to resell	(1,253,866)	(176,922)
Receivables from brokers, dealers and clearing organizations	(680,802)	(187,663)
Receivables from customers of securities operations	228,412	(419,506)
Other receivables	(125,315)	(86,984)
Other assets	(137,438)	(57,380)
Trading liabilities	654,849	1,799,908
Securities loaned	500,307	(266,028)
Securities sold under agreements to repurchase	233,115	139,287
Payables to brokers, dealers and clearing organizations	26,872	518,671
Payables to customers of securities operations	(38,618)	489,060
Trade payables, expense accruals and other liabilities	(347,271)	(351,950)
Other	86,869	(87,605)
Net cash used for operating activities - continuing operations	(1,440,361)	(688,764)
Net cash provided by operating activities - discontinued operations	0	164,650
Net cash used for operating activities	(1,440,361)	(524,114)
Net cash flows from investing activities:
Acquisitions of property, equipment and leasehold improvements, and other assets	(102,515)	(240,864)
Proceeds from disposals of property and equipment, and other assets	5,860	8,138
Advances on notes, loans and other receivables	(199,276)	0
Collections on notes, loans and other receivables	131,249	11,785
Loans to and investments in associated companies	(74,105)	(1,921,671)
Capital distributions and loan repayments from associated companies	25,612	1,925,104
Purchases of investments (other than short-term)	(1,986)	(1,961,344)
Proceeds from maturities of investments	531,067	370,360
Proceeds from sales of investments	886,876	955,785
Other	0	1
Net cash provided by (used for) investing activities - continuing operations	1,202,782	(852,706)
Net cash provided by investing activities - discontinued operations	0	860,827
Net cash provided by investing activities	1,202,782	8,121
Net cash flows from financing activities:
Issuance of debt, net of issuance costs	1,230,064	1,863,299
Repayment of debt	(877,593)	(1,585,149)
Net change in other secured financings	264,168	434,188
Net change in bank overdrafts	(14,352)	(2,722)
Distributions to noncontrolling interests	(2,481)	0
Contributions from noncontrolling interests	6,705	113
Purchase of common shares for treasury	(364,708)	(562,429)
Dividends paid	(74,563)	(70,050)
Other	581	1,281
Net cash provided by financing activities - continuing operations	167,821	78,531
Net cash provided by financing activities - discontinued operations	0	120,322
Net cash provided by financing activities	167,821	198,853
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	(3,892)	(9,582)
Net decrease in cash, cash equivalents and restricted cash	(73,650)	(326,722)
Cash, cash equivalents and restricted cash at beginning of period	6,012,662	5,774,505
Cash, cash equivalents and restricted cash at end of period	$ 5,939,012	$ 5,447,783

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	May 31, 2019	Jun. 30, 2018
Statement of Cash Flows [Abstract]
Cash and cash equivalents	$ 5,393,737	$ 4,741,057
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	508,607	674,796
Other assets	36,668	31,930
Total cash, cash equivalents and restricted cash	$ 5,939,012	$ 5,447,783

Consolidated Statements of Chan

Consolidated Statements of Changes In Equity - USD ($) $ in Thousands	Total	Common Shares $1 Par Value	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Subtotal	Noncontrolling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of the adoption of accounting standards	$ 17,812			$ (27,584)	$ 45,396	$ 17,812
Beginning Balance, Adjusted	10,156,791	$ 356,227	$ 4,676,038	345,140	4,746,364	10,123,769	$ 33,022
Beginning Balance at Dec. 31, 2017	10,138,979	356,227	4,676,038	372,724	4,700,968	10,105,957	33,022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	848,846				850,054	850,054	(1,208)
Other comprehensive loss, net of taxes	(30,167)			(30,167)		(30,167)
Contributions from noncontrolling interests	113						113
Change in interest in consolidated subsidiary	0		2,677			2,677	(2,677)
Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustments prior to deconsolidation	237,669		237,669			237,669
Share-based compensation expense	25,198		25,198			25,198
Change in fair value of redeemable noncontrolling interests	(21,404)		(21,404)			(21,404)
Purchase of common shares for treasury	(586,351)	(24,249)	(562,102)			(586,351)
Dividends	(73,141)				(73,141)	(73,141)
Other	9,887	1,333	8,555			9,888	(1)
Ending Balance at Jun. 30, 2018	10,567,441	333,311	4,366,631	314,973	5,523,277	10,538,192	29,249
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Adjusted	10,288,128	357,216	4,711,218	357,317	4,833,329	10,259,080	29,048
Net income	725,665				725,529	725,529	136
Other comprehensive loss, net of taxes	(42,344)			(42,344)		(42,344)
Contributions from noncontrolling interests	113					0	113
Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustments prior to deconsolidation	237,669		237,669			237,669
Share-based compensation expense	12,767		12,767			12,767
Change in fair value of redeemable noncontrolling interests	(38,471)		(38,471)			(38,471)
Purchase of common shares for treasury	(583,651)	(24,149)	(559,502)			(583,651)
Dividends	(35,581)				(35,581)	(35,581)
Other	3,146	244	2,950			3,194	(48)
Ending Balance at Jun. 30, 2018	10,567,441	333,311	4,366,631	314,973	5,523,277	10,538,192	29,249
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Adjusted	10,567,441	333,311	4,366,631	314,973	5,523,277	10,538,192	29,249
Beginning Balance, Adjusted	10,079,257	307,515	3,854,847	288,286	5,610,218	10,060,866	18,391
Beginning Balance at Nov. 30, 2018	10,079,257
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	716,450				715,575	715,575	875
Other comprehensive loss, net of taxes	(531,110)			(531,110)		(531,110)
Contributions from noncontrolling interests	6,705					0	6,705
Distributions to noncontrolling interests	(2,481)					0	(2,481)
Share-based compensation expense	24,886		24,886			24,886
Change in fair value of redeemable noncontrolling interests	1,121		1,121			1,121
Purchase of common shares for treasury	(347,139)	(17,490)	(329,649)			(347,139)
Dividends	(78,941)				(78,941)	(78,941)
Other	8,613	662	7,951			8,613	0
Ending Balance at May. 31, 2019	9,877,361
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Adjusted	9,956,133	298,313	3,681,085	338,619	5,614,935	9,932,952	23,181
Net income	670,573				670,764	670,764	(191)
Other comprehensive loss, net of taxes	(581,443)			(581,443)		(581,443)
Contributions from noncontrolling interests	2,000					0	2,000
Distributions to noncontrolling interests	(1,500)					0	(1,500)
Share-based compensation expense	13,073		13,073			13,073
Change in fair value of redeemable noncontrolling interests	1,657		1,657			1,657
Purchase of common shares for treasury	(150,046)	(7,762)	(142,284)			(150,046)
Dividends	(38,847)				(38,847)	(38,847)
Other	5,761	136	5,625			5,761	0
Ending Balance at May. 31, 2019	9,877,361
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Adjusted	$ 9,877,361	$ 290,687	$ 3,559,156	$ (242,824)	$ 6,246,852	$ 9,853,871	$ 23,490

Consolidated Statements of Ch_2

Consolidated Statements of Changes In Equity (Parenthetical) - $ / shares	3 Months Ended					6 Months Ended
	May 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	May 31, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Dividends per common share (in dollars per share)	$ 0.125	$ 0.125	$ 0.1	$ 0.10	$ 0.0625	$ 0.25	$ 0.2

Nature of Operations

Nature of Operations	6 Months Ended
	May 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations Jefferies Financial Group Inc. ("Jefferies" or the "Company") is a diversified financial services company engaged in investment banking and capital markets, asset management and direct investing. Jefferies Group LLC ("Jefferies Group"), our largest subsidiary, is the largest independent full-service global investment banking firm headquartered in the U.S. Jefferies Group operates in two business segments: Capital Markets and Asset Management. Capital Markets includes investment banking, sales and trading and other related services. Investment banking provides capital markets and financial advisory services to clients across most industry sectors in the Americas, Europe and Asia. Sales and trading businesses operate across the spectrum of equities, fixed income and foreign exchange products. Related services include, among other things, prime brokerage and equity finance, research and strategy, corporate lending and real estate finance, as well as other principal and corporate investing activities. Asset Management provides investment management services to investors in the U.S. and overseas and makes capital investments in managed funds and accounts. In March 2013, Jefferies Group became an indirect wholly-owned subsidiary of Jefferies, yet retains a separate credit rating and continues to be a separate U.S. Securities and Exchange Commission ("SEC") reporting company. Merchant Banking is where we invest in unique long-term opportunities. Our current Merchant Banking businesses and investments include National Beef Packing Company, LLC ("National Beef") (beef processing), Spectrum Brands Holdings, Inc. ("Spectrum Brands") (consumer products), Linkem (fixed wireless broadband services in Italy), Vitesse Energy, LLC ("Vitesse Energy Finance") and JETX Energy, LLC ("JETX Energy") (oil and gas production and development), WeWork (global network of workspaces), HomeFed Corporation ("HomeFed") (real estate), Idaho Timber (manufacturing) and FXCM Group, LLC ("FXCM") (provider of online foreign exchange trading services). Our Merchant Banking businesses and investments also included Leucadia Asset Management ("LAM") (asset management) and Berkadia Commercial Mortgage Holding LLC ("Berkadia") (commercial mortgage banking, investment sales and servicing), prior to their transfer to Jefferies Group in the fourth quarter of 2018 and Garcadia (automobile dealerships), prior to its sale in August 2018. The structure of each of our investments was tailored to the unique opportunity each transaction presented. Our investments may be reflected in our consolidated results as consolidated subsidiaries, equity investments, securities or in other ways, depending on the structure of our specific holdings. We own 31% of National Beef, one of the largest beef processing companies in the U.S. On June 5, 2018, we completed the sale of 48% of National Beef to Marfrig Global Foods S.A. ("Marfrig") reducing our ownership in National Beef from 79% to 31% . As of the closing of the sale on June 5, 2018, we deconsolidated our investment in National Beef and account for our remaining 31% interest in National Beef under the equity method of accounting. We classified the results of National Beef prior to June 5, 2018 as discontinued operations in the Consolidated Statements of Operations. See Note 23 for more information. We own approximately 15% of Spectrum Brands, a publicly traded global consumer products company on the NYSE (NYSE: SPB), and we reflect this investment at fair value based on quoted market prices. We own approximately 42% of the common shares of Linkem, as well as convertible preferred shares which, if converted, would increase our ownership to approximately 54% of Linkem's common equity at May 31, 2019 . Linkem provides residential broadband services in Italy using LTE technologies deployed over the 3.5 GHz spectrum band. Linkem is accounted for under the equity method. Vitesse Energy Finance is our 97% owned consolidated subsidiary that acquires and invests in non-operated working interests and royalties predominantly in the Bakken Shale oil field in North Dakota. JETX Energy is our 98% owned consolidated subsidiary that currently has non-operated working interests and acreage in east Texas. We invested $9.0 million in 2013 in WeWork, which creates collaborative office communities. Currently we own less than 1% of the company. Our interest in WeWork is reflected in Trading assets in our financial statements at fair value. Through June 30, 2019, we owned an approximate 70% equity interest of HomeFed, which owns and develops residential and mixed-use real estate properties and accounted for our interest under the equity method. On July 1, 2019, we completed a merger with HomeFed by which we acquired the remaining common stock of HomeFed. From July 1, 2019, the results of HomeFed will be reflected on a consolidated basis. In connection with the merger, HomeFed stockholders received two shares of our common stock for each share of HomeFed common stock. A total of 9.3 million shares were issued. As an offset to these issued shares, our Board of Directors has authorized the repurchase of 9.25 million shares in the open market.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	May 31, 2019
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	Basis of Presentation and Significant Accounting Policies Our unaudited interim consolidated financial statements have been prepared in accordance with the instructions for Form 10-Q and, therefore, do not include all information and footnotes which are normally included in our Form 10-K. These financial statements reflect all adjustments (consisting of normal recurring items or items discussed herein) that management believes are necessary to fairly state results for the interim periods presented. Results of operations for interim periods are not necessarily indicative of annual results of operations. For a detailed discussion about the Company’s significant accounting policies, see Note 2, Significant Accounting Policies, included in our Transition Report on Form 10-K for the year ended November 30, 2018 ("2018 10-K"). The preparation of these financial statements in accordance with accounting principles generally accepted in the United States of America ("GAAP") requires us to make estimates and assumptions that affect the reported amounts in the financial statements and disclosures of contingent assets and liabilities. On an on-going basis, we evaluate all of these estimates and assumptions. The most important of these estimates and assumptions relate to fair value measurements, compensation and benefits, asset impairment, the ability to realize deferred tax assets, the recognition and measurement of uncertain tax positions and contingencies. Although these and other estimates and assumptions are based on the best available information, actual results could be different from these estimates. In the fourth quarter of 2018, we changed our fiscal year end from a calendar year basis to a fiscal year ending on November 30, consistent with the fiscal year of Jefferies Group. Jefferies Group has a November 30 year-end, which it retains for standalone reporting purposes. Prior to the fourth quarter of 2018, because our fiscal year end was December 31, we reflected Jefferies Group in our consolidated financial statements utilizing a one month lag. In connection with our change in fiscal year end to November 30, we eliminated the one month lag utilized to reflect Jefferies Group results beginning with the fourth quarter of 2018. Receivables At May 31, 2019 and November 30, 2018 , Receivables include receivables from brokers, dealers and clearing organizations of $3,898.5 million and $3,223.7 million , respectively, and receivables from customers of securities operations of $1,788.2 million and $2,017.1 million , respectively. Our subsidiary, Foursight Capital, had auto loan receivables of $704.2 million and $648.7 million at May 31, 2019 and November 30, 2018 , respectively. Based primarily on Beacon credit scores, Foursight Capital classifies its auto loan receivables as prime, near-prime and sub-prime based on the perceived credit risk at origination and generally considers prime receivables as those with a Beacon score of 680 and above, near-prime with scores between 620 and 679 and sub-prime with scores below 620. The credit quality classification at May 31, 2019 and November 30, 2018 was approximately 15% and 13% prime, 54% and 57% near-prime and 31% and 30% sub-prime, respectively. Payables, expense accruals and other liabilities At May 31, 2019 and November 30, 2018 , Payables, expense accruals and other liabilities include payables to brokers, dealers and clearing organizations of $2,467.4 million and $2,465.6 million , respectively, and payables to customers of securities operations of $3,138.1 million and $3,176.7 million , respectively. Supplemental Cash Flow Information For the Six Months Ended May 31, June 30, 2018 (In thousands) Cash paid during the year for: Interest $ 808,740 $ 654,370 Income tax payments (refunds), net $ 21,410 $ 15,804 Accounting Developments - Accounting Standards to be Adopted in Future Periods Leases. In February 2016, the Financial Accounting Standards Board ("FASB") issued new guidance that affects the accounting and disclosure requirements for leases. The FASB requires the recognition of all leases that are longer than one year onto the balance sheet, which will result in the recognition of a right of use asset and a corresponding lease liability. The right of use asset and lease liability will be measured initially using the present value of the remaining rental payments. A significant portion of the population of contracts that will be subject to recognition on our Consolidated Statements of Financial Condition have been identified; however, their initial measurement still remains under evaluation. We are currently modifying certain of our lease accounting systems to enable us to comply with the accounting requirements of this guidance. In July 2018, the FASB issued additional guidance on leases which allows an entity to recognize a cumulative-effect adjustment to the opening balance of retained earnings upon adoption. The guidance is effective for annual and interim periods beginning after December 15, 2018. We plan on adopting the lease standard in the first quarter of fiscal 2020 with a cumulative-effect adjustment to opening retained earnings in the period of adoption. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Financial Instruments - Credit Losses. In June 2016, the FASB issued new guidance for estimating credit losses on certain types of financial instruments by introducing an approach based on expected losses. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Goodwill. In January 2017, the FASB issued new guidance for simplifying goodwill impairment testing. The guidance is effective in the first quarter of fiscal 2021. We do not believe the new guidance will have a material impact on our consolidated financial statements. Derivatives and Hedging. In August 2017, the FASB issued new guidance to improve the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements. The guidance is effective in the first quarter of fiscal 2020. We do not believe the new guidance will have a material impact on our consolidated financial statements. Defined Benefit Plans. In August 2018, the FASB issued new guidance to improve the effectiveness of disclosure requirements on defined benefit pension plans and other post-retirement plans. The guidance is effective in the first quarter of fiscal 2021. We do not believe the new guidance will have a material impact on our consolidated financial statements. Internal-Use Software. In August 2018, the FASB issued new guidance which amends the definition of a hosting arrangement and requires that the customer in a hosting arrangement that is a service contract capitalize certain implementation costs as if the arrangement was an internal-use software project. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Consolidation. In October 2018, the FASB issued new guidance which requires indirect interests held through related parties under common control arrangements be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements.

Fair Value Disclosures

Fair Value Disclosures	6 Months Ended
	May 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures The following is a summary of our financial instruments, securities purchased under agreements to resell, trading liabilities and long-term debt that are accounted for at fair value on a recurring basis, excluding Investments at fair value based on net asset value ("NAV") (within trading assets) of $646.4 million and $394.4 million at May 31, 2019 and November 30, 2018 , respectively, by level within the fair value hierarchy (in thousands): May 31, 2019 Level 1 Level 2 Level 3 Counterparty and Cash Collateral Netting (1) Total Assets: Trading assets, at fair value: Corporate equity securities $ 2,701,693 $ 132,121 $ 59,572 $ — $ 2,893,386 Corporate debt securities — 2,978,062 8,346 — 2,986,408 Collateralized debt obligations and collateralized loan obligations — 123,840 25,912 — 149,752 U.S. government and federal agency securities 1,505,882 114,761 — — 1,620,643 Municipal securities — 980,138 — — 980,138 Sovereign obligations 1,866,301 1,020,111 — — 2,886,412 Residential mortgage-backed securities — 1,159,961 17,266 — 1,177,227 Commercial mortgage-backed securities — 404,897 12,530 — 417,427 Other asset-backed securities — 267,565 43,185 — 310,750 Loans and other receivables — 2,105,642 98,484 — 2,204,126 Derivatives 16,348 2,529,500 8,414 (2,197,763 ) 356,499 Investments at fair value — 84,058 408,739 — 492,797 FXCM term loan — — 56,600 — 56,600 Total trading assets, excluding investments at fair value based on NAV $ 6,090,224 $ 11,900,656 $ 739,048 $ (2,197,763 ) $ 16,532,165 Securities purchased under agreements to resell $ — $ — $ 25,000 $ — $ 25,000 Liabilities: Trading liabilities: Corporate equity securities $ 2,664,846 $ 4,820 $ 221 $ — $ 2,669,887 Corporate debt securities — 1,919,466 669 — 1,920,135 U.S. government and federal agency securities 1,236,461 — — — 1,236,461 Sovereign obligations 1,328,132 870,039 — — 2,198,171 Commercial mortgage-backed securities — 724 — — 724 Loans — 1,524,341 9,428 — 1,533,769 Derivatives 24,578 2,843,810 55,863 (2,370,008 ) 554,243 Total trading liabilities $ 5,254,017 $ 7,163,200 $ 66,181 $ (2,370,008 ) $ 10,113,390 Long-term debt $ — $ 582,947 $ 236,562 $ — $ 819,509 November 30, 2018 Level 1 Level 2 Level 3 Counterparty and Cash Collateral Netting (1) Total Assets: Trading assets, at fair value: Corporate equity securities $ 2,497,045 $ 118,681 $ 52,192 $ — $ 2,667,918 Corporate debt securities — 2,683,180 9,484 — 2,692,664 Collateralized debt obligations and collateralized loan obligations — 72,949 36,105 — 109,054 U.S. government and federal agency securities 1,789,614 56,592 — — 1,846,206 Municipal securities — 894,253 — — 894,253 Sovereign obligations 1,769,556 1,043,409 — — 2,812,965 Residential mortgage-backed securities — 2,163,629 19,603 — 2,183,232 Commercial mortgage-backed securities — 819,406 10,886 — 830,292 Other asset-backed securities — 239,381 53,175 — 292,556 Loans and other receivables — 2,056,593 46,985 — 2,103,578 Derivatives 34,841 2,539,943 5,922 (2,413,931 ) 166,775 Investments at fair value — — 396,254 — 396,254 FXCM term loan — — 73,150 — 73,150 Total trading assets, excluding investments at fair value based on NAV $ 6,091,056 $ 12,688,016 $ 703,756 $ (2,413,931 ) $ 17,068,897 Available for sale securities: U.S. government securities $ 1,072,856 $ — $ — $ — $ 1,072,856 Residential mortgage-backed securities — 210,518 — — 210,518 Commercial mortgage-backed securities — 15,642 — — 15,642 Other asset-backed securities — 110,870 — — 110,870 Total available for sale securities $ 1,072,856 $ 337,030 $ — $ — $ 1,409,886 Liabilities: Trading liabilities: Corporate equity securities $ 1,685,071 $ 1,444 $ — $ — $ 1,686,515 Corporate debt securities — 1,505,618 522 — 1,506,140 U.S. government and federal agency securities 1,384,295 — — — 1,384,295 Sovereign obligations 1,735,242 661,095 — — 2,396,337 Loans — 1,371,630 6,376 — 1,378,006 Derivatives 26,473 3,586,694 27,536 (2,513,050 ) 1,127,653 Total trading liabilities $ 4,831,081 $ 7,126,481 $ 34,434 $ (2,513,050 ) $ 9,478,946 Long-term debt $ — $ 485,425 $ 200,745 $ — $ 686,170 (1) Represents counterparty and cash collateral netting across the levels of the fair value hierarchy for positions with the same counterparty. The following is a description of the valuation basis, including valuation techniques and inputs, used in measuring our financial assets and liabilities that are accounted for at fair value on a recurring basis: Corporate Equity Securities • Exchange-Traded Equity Securities: Exchange-traded equity securities are measured based on quoted closing exchange prices, which are generally obtained from external pricing services, and are categorized within Level 1 of the fair value hierarchy, otherwise they are categorized within Level 2 of the fair value hierarchy. To the extent these securities are actively traded, valuation adjustments are not applied. • Non-Exchange-Traded Equity Securities : Non-exchange-traded equity securities are measured primarily using broker quotations, pricing data from external pricing services and prices observed from recently executed market transactions and are categorized within Level 2 of the fair value hierarchy. Where such information is not available, non-exchange-traded equity securities are categorized within Level 3 of the fair value hierarchy and measured using valuation techniques involving quoted prices of or market data for comparable companies, similar company ratios and multiples (e.g., price/Earnings before interest, taxes, depreciation and amortization ("EBITDA"), price/book value), discounted cash flow analyses and transaction prices observed from subsequent financing or capital issuance by Jefferies Group. When using pricing data of comparable companies, judgment must be applied to adjust the pricing data to account for differences between the measured security and the comparable security (e.g., issuer market capitalization, yield, dividend rate, geographical concentration). • Equity Warrants: Non-exchange-traded equity warrants are measured primarily using pricing data from external pricing services, prices observed from recently executed market transactions and broker quotations and are categorized within Level 2 of the fair value hierarchy. Where such information is not available, non-exchange-traded equity warrants are generally categorized within Level 3 of the fair value hierarchy and are measured using the Black-Scholes model with key inputs impacting the valuation including the underlying security price, implied volatility, dividend yield, interest rate curve, strike price and maturity date. Corporate Debt Securities • Investment Grade Corporate Bonds: Investment grade corporate bonds are measured primarily using pricing data from external pricing services and broker quotations, where available, prices observed from recently executed market transactions and bond spreads or credit default swap spreads of the issuer adjusted for basis differences between the swap curve and the bond curve. Investment grade corporate bonds measured using these valuation methods are categorized within Level 2 of the fair value hierarchy. If broker quotes, pricing data or spread data is not available, alternative valuation techniques are used including cash flow models incorporating interest rate curves, single name or index credit default swap curves for comparable issuers and recovery rate assumptions. Investment grade corporate bonds measured using alternative valuation techniques are categorized within Level 2 or Level 3 of the fair value hierarchy and are a limited portion of our investment grade corporate bonds. • High Yield Corporate and Convertible Bonds: A significant portion of our high yield corporate and convertible bonds are categorized within Level 2 of the fair value hierarchy and are measured primarily using broker quotations and pricing data from external pricing services, where available, and prices observed from recently executed market transactions of institutional size. Where pricing data is less observable, valuations are categorized within Level 3 of the fair value hierarchy and are based on pending transactions involving the issuer or comparable issuers, prices implied from an issuer's subsequent financing or recapitalization, models incorporating financial ratios and projected cash flows of the issuer and market prices for comparable issuers. Collateralized Debt Obligations and Collateralized Loan Obligations Collateralized debt obligations ("CDOs") and collateralized loan obligations ("CLOs") are measured based on prices observed from recently executed market transactions of the same or similar security or based on valuations received from third-party brokers or data providers and are categorized within Level 2 or Level 3 of the fair value hierarchy depending on the observability and significance of the pricing inputs. Valuation that is based on recently executed market transactions of similar securities incorporates additional review and analysis of pricing inputs and comparability criteria, including, but not limited to, collateral type, tranche type, rating, origination year, prepayment rates, default rates and loss severity. U.S. Government and Federal Agency Securities • U.S. Treasury Securities: U.S. Treasury securities are measured based on quoted market prices obtained from external pricing services and categorized within Level 1 of the fair value hierarchy. • U.S. Agency Debt Securities: Callable and non-callable U.S. agency debt securities are measured primarily based on quoted market prices obtained from external pricing services and are generally categorized within Level 1 or Level 2 of the fair value hierarchy. Municipal Securities Municipal securities are measured based on quoted prices obtained from external pricing services and are generally categorized within Level 2 of the fair value hierarchy. Sovereign Obligations Sovereign government obligations are measured based on quoted market prices obtained from external pricing services, where available, or recently executed independent transactions of comparable size. Sovereign government obligations, with consideration given to the country of issuance, are generally categorized in Level 1 or Level 2 of the fair value hierarchy. Residential Mortgage-Backed Securities • Agency Residential Mortgage-Backed Securities: Agency residential mortgage-backed securities include mortgage pass-through securities (fixed and adjustable rate), collateralized mortgage obligations and principal-only and interest-only (including inverse interest-only) securities. Agency residential mortgage-backed securities are generally measured using recent transactions, pricing data from external pricing services or expected future cash flow techniques that incorporate prepayment models and other prepayment assumptions to amortize the underlying mortgage loan collateral and are categorized within Level 2 of the fair value hierarchy. We use prices observed from recently executed transactions to develop market-clearing spread and yield curve assumptions. Valuation inputs with regard to the underlying collateral incorporate factors such as weighted average coupon, loan-to-value, credit scores, geographic location, maximum and average loan size, originator, servicer and weighted average loan age. • Non-Agency Residential Mortgage-Backed Securities: The fair value of non-agency residential mortgage-backed securities is determined primarily using discounted cash flow methodologies and securities are categorized within Level 2 or Level 3 of the fair value hierarchy based on the observability and significance of the pricing inputs used. Performance attributes of the underlying mortgage loans are evaluated to estimate pricing inputs, such as prepayment rates, default rates and the severity of credit losses. Attributes of the underlying mortgage loans that affect the pricing inputs include, but are not limited to, weighted average coupon; average and maximum loan size; loan-to-value; credit scores; documentation type; geographic location; weighted average loan age; originator; servicer; historical prepayment, default and loss severity experience of the mortgage loan pool; and delinquency rate. Yield curves used in the discounted cash flow models are based on observed market prices for comparable securities and published interest rate data to estimate market yields. In addition, broker quotes, where available, are also referenced to compare prices primarily on interest-only securities. Commercial Mortgage-Backed Securities • Agency Commercial Mortgage-Backed Securities: Government National Mortgage Association ("GNMA") project loan bonds are measured based on inputs corroborated from and benchmarked to observed prices of recent securitization transactions of similar securities with adjustments incorporating an evaluation of various factors, including prepayment speeds, default rates and cash flow structures, as well as the likelihood of pricing levels in the current market environment. Federal National Mortgage Association ("FNMA") Delegated Underwriting and Servicing ("DUS") mortgage-backed securities are generally measured by using prices observed from recently executed market transactions to estimate market-clearing spread levels for purposes of estimating fair value. GNMA project loan bonds and FNMA DUS mortgage-backed securities are categorized within Level 2 of the fair value hierarchy. • Non-Agency Commercial Mortgage-Backed Securities: Non-agency commercial mortgage-backed securities are measured using pricing data obtained from external pricing services, prices observed from recently executed market transactions or based on expected cash flow models that incorporate underlying loan collateral characteristics and performance. Non-agency commercial mortgage-backed securities are categorized within Level 2 or Level 3 of the fair value hierarchy depending on the observability of the underlying inputs. Other Asset-Backed Securities Other asset-backed securities include, but are not limited to, securities backed by auto loans, credit card receivables, student loans and other consumer loans and are categorized within Level 2 or Level 3 of the fair value hierarchy. Valuations are primarily determined using pricing data obtained from external pricing services, broker quotes and prices observed from recently executed market transactions. In addition, recent transaction data from comparable deals is deployed to develop market clearing yields and cumulative loss assumptions. The cumulative loss assumptions are based on the analysis of the underlying collateral and comparisons to earlier deals from the same issuer to gauge the relative performance of the deal. Loans and Other Receivables • Corporate Loans: Corporate loans categorized within Level 2 of the fair value hierarchy are measured based on market consensus pricing service quotations. Where available, market price quotations from external pricing services are reviewed to ensure they are supported by transaction data. Corporate loans categorized within Level 3 of the fair value hierarchy are measured based on price quotations that are considered to be less transparent, market prices for debt securities of the same creditor and estimates of future cash flows incorporating assumptions regarding creditor default and recovery rates and consideration of the issuer's capital structure. • Participation Certificates in Agency Residential Loans: Valuations of participation certificates in agency residential loans are based on observed market prices of recently executed purchases and sales of similar loans and data provider pricing. The loan participation certificates are categorized within Level 2 of the fair value hierarchy given the observability and volume of recently executed transactions and availability of data provider pricing. • Project Loans and Participation Certificates in GNMA Project and Construction Loans: Valuations of participation certificates in GNMA project and construction loans are based on inputs corroborated from and benchmarked to observed prices of recent securitizations with similar underlying loan collateral to derive an implied spread. Securitization prices are adjusted to estimate the fair value of the loans to account for the arbitrage that is realized at the time of securitization. The measurements are categorized within Level 2 of the fair value hierarchy given the observability and volume of recently executed transactions. • Consumer Loans and Funding Facilities: Consumer and small business whole loans and related funding facilities are valued based on observed market transactions and incorporating valuation inputs including, but not limited to, delinquency and default rates, prepayment rates, borrower characteristics, loan risk grades and loan age. These assets are categorized within Level 2 or Level 3 of the fair value hierarchy. • Escrow and Trade Claim Receivables: Escrow and trade claim receivables are categorized within Level 3 of the fair value hierarchy where fair value is estimated based on reference to market prices and implied yields of debt securities of the same or similar issuers. Escrow and trade claim receivables are categorized within Level 2 of the fair value hierarchy where fair value is based on recent observations in the same receivable. Derivatives • Listed Derivative Contracts: Listed derivative contracts that are actively traded are measured based on quoted exchange prices, broker quotes or vanilla option valuation models, such as Black-Scholes, using observable valuation inputs from the principal market or consensus pricing services. Exchange quotes and/or valuation inputs are generally obtained from external vendors and pricing services. Broker quotes are validated directly through observable and tradeable quotes. Listed derivative contracts that use unadjusted exchange close prices are generally categorized within Level 1 of the fair value hierarchy. All other listed derivative contracts are generally categorized within Level 2 of the fair value hierarchy. • Over-the-Counter ("OTC") Derivative Contracts: OTC derivative contracts are generally valued using models, whose inputs reflect assumptions that we believe market participants would use in valuing the derivative in a current transaction. Where available, valuation inputs are calibrated from observable market data. For many OTC derivative contracts, the valuation models do not involve material subjectivity as the methodologies do not entail significant judgment and the inputs to valuation models do not involve a high degree of subjectivity as the valuation model inputs are readily observable or can be derived from actively quoted markets. OTC derivative contracts are primarily categorized within Level 2 of the fair value hierarchy given the observability and significance of the inputs to the valuation models. Where significant inputs to the valuation are unobservable, derivative instruments are categorized within Level 3 of the fair value hierarchy. OTC options include OTC equity, foreign exchange, interest rate and commodity options measured using various valuation models, such as Black-Scholes, with key inputs including the underlying security price, foreign exchange spot rate, commodity price, implied volatility, dividend yield, interest rate curve, strike price and maturity date. Discounted cash flow models are utilized to measure certain OTC derivative contracts including the valuations of our interest rate swaps, which incorporate observable inputs related to interest rate curves, valuations of our foreign exchange forwards and swaps, which incorporate observable inputs related to foreign currency spot rates and forward curves and valuations of our commodity swaps and forwards, which incorporate observable inputs related to commodity spot prices and forward curves. Discounted cash flow models are also utilized to measure certain variable funding note swaps, which are backed by CLOs and incorporate constant prepayment rate, constant default rate and loss severity assumptions. Credit default swaps include both index and single-name credit default swaps. Where available, external data is used in measuring index credit default swaps and single-name credit default swaps. For commodity and equity total return swaps, market prices are generally observable for the underlying asset and used as the basis for measuring the fair value of the derivative contracts. Total return swaps executed on other underlyings are measured based on valuations received from external pricing services. • Oil Futures Derivatives: Vitesse Energy Finance uses swaps and call and put options in order to reduce exposure to future oil price fluctuations. Vitesse Energy Finance accounts for the derivative instruments at fair value, which are classified as either Level 1 or Level 2 within the fair value hierarchy. Fair values classified as Level 1 are measured based on quoted closing exchange prices obtained from external pricing services and Level 2 are determined under the income valuation technique using an option-pricing model that is based on directly or indirectly observable inputs. Investments at Fair Value Investments at fair value include investments in hedge funds, fund of funds and private equity funds, which are measured at the NAV of the funds, provided by the fund managers and are excluded from the fair value hierarchy. Investments at fair value also include direct equity investments in private companies, which are measured at fair value using valuation techniques involving quoted prices of or market data for comparable companies, similar company ratios and multiples (e.g., price/EBITDA, price/book value), discounted cash flow analyses, contingent claims analysis and transaction prices observed for subsequent financing or capital issuance by the company. Direct equity investments in private companies are categorized within Level 2 or Level 3 of the fair value hierarchy. The following tables present information about our investments in entities that have the characteristics of an investment company (in thousands): Fair Value (1) Unfunded Commitments May 31, 2019 Equity Long/Short Hedge Funds (2) $ 361,046 $ — Equity Funds (3) 35,863 19,679 Commodity Funds (4) 15,672 — Multi-asset Funds (5) 233,512 — Other funds (6) 326 — Total $ 646,419 $ 19,679 November 30, 2018 Equity Long/Short Hedge Funds (2) $ 86,788 $ — Equity Funds (3) 40,070 20,996 Commodity Funds (4) 10,129 — Multi-asset Funds (5) 256,972 — Other funds (6) 400 — Total $ 394,359 $ 20,996 (1) Where fair value is calculated based on NAV, fair value has been derived from each of the funds' capital statements. (2) This category includes investments in hedge funds that invest, long and short, primarily in equity securities in domestic and international markets in both the public and private sectors. At May 31, 2019 and November 30, 2018 , approximately 73% and 0% , respectively, of the fair value of investments in this category cannot be redeemed because these investments include restrictions that do not allow for redemption in the first 36 months after acquisition. At the end of this restriction period, which is in approximately 31 months at May 31, 2019 , these investments are redeemable monthly with 45 to 90 days prior written notice. At May 31, 2019 and November 30, 2018 , 22% and 82% , respectively, of these investments are redeemable in 2020. At May 31, 2019 and November 30, 2018 , 5% and 17% , respectively, of these investments are redeemable quarterly with 60 days prior written notice. (3) The investments in this category include investments in equity funds that invest in the equity of various U.S. and foreign private companies in the energy, technology, internet service and telecommunication service industries. These investments cannot be redeemed; instead distributions are received through the liquidation of the underlying assets of the funds, which are expected to be liquidated in approximately one to ten years . (4) This category includes investments in a hedge fund that invests, long and short, primarily in commodities. Investments in this category are redeemable quarterly with 60 days prior written notice. (5) This category includes investments in hedge funds that invest, long and short, primarily in multi-asset securities in domestic and international markets in both the public and private sectors. At May 31, 2019 and November 30, 2018 , investments representing approximately 5% and 15% , respectively, of the fair value of investments in this category are redeemable monthly with 30 days prior written notice. (6) This category includes investments in a fund that invests in loans secured by a first trust deed on property, domestic and international public high yield debt, private high yield investments, senior bank loans, public leveraged equities, distressed debt and private equity investments and there are no redemption provisions. This category also includes investments in a fund of funds that invests in various private equity funds that are managed by Jefferies Group and have no redemption provisions. Investments in the fund of funds are gradually being liquidated, however, the timing of when the proceeds will be received is uncertain. Investments at fair value also include our investment in WeWork. We invested $9.0 million in WeWork in 2013 and currently own less than 1% of the company. Our interest in WeWork is reflected in Trading assets, at fair value of $269.2 million and $254.4 million at May 31, 2019 and November 30, 2018 , respectively. Investment in FXCM Our investment in FXCM and associated companies consists of a senior secured term loan due February 15, 2021 ( $71.9 million principal outstanding at May 31, 2019 ), a 50% voting interest in FXCM and a majority of all distributions in respect of the equity of FXCM. Our investment in the FXCM term loan is reported within Trading assets, at fair value in our Consolidated Statements of Financial Condition. We classify our equity investment in FXCM in our May 31, 2019 and November 30, 2018 Consolidated Statements of Financial Condition as Loans to and investments in associated companies, as we have the ability to significantly influence FXCM through our seats on the board of directors. We estimate the fair value of our term loan by using a valuation model with inputs including management’s assumptions concerning the amount and timing of expected cash flows, the loan’s implied credit rating and effective yield. Because of these inputs and the degree of judgment involved, we have categorized our term loan within Level 3 of the fair value hierarchy. Securities Purchased Under Agreements to Resell Securities purchased under agreements to resell may include embedded call features. The valuation of these instruments is based on review of expected future cash flows, interest rates, funding spreads and the fair value of the underlying collateral. Securities purchased under agreements to resell are categorized within Level 3 of the fair value hierarchy due to limited observability of the embedded derivative and unobservable credit spreads. Long-term Debt Long-term debt includes variable rate, fixed-to-floating rate, constant maturity swap, digital and Bermudan structured notes. These are valued using various valuation models that incorporate Jefferies Group's own credit spread, market price quotations from external pricing sources referencing the appropriate interest rate curves, volatilities and other inputs as well as prices for transactions in a given note during the period. Long-term debt notes are generally categorized within Level 2 of the fair value hierarchy where market trades have been observed during the quarter, otherwise they are categorized within Level 3. Level 3 Rollforwards The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the three months ended May 31, 2019 (in thousands): Three Months Ended May 31, 2019 Balance, February 28, 2019 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, May 31, 2019 Changes in unrealized gains/losses included in earnings relating to instruments still held at May 31, 2019 (1) Assets: Trading assets: Corporate equity securities $ 55,576 $ 1,808 $ 221 $ (179 ) $ (551 ) $ — $ 2,697 $ 59,572 $ 1,909 Corporate debt securities 10,930 (306 ) 816 — (325 ) — (2,769 ) 8,346 (307 ) CDOs and CLOs 43,144 (1,663 ) — — (991 ) — (14,578 ) 25,912 (2,656 ) Residential mortgage-backed securities 20,963 (802 ) — — (18 ) — (2,877 ) 17,266 (759 ) Commercial mortgage-backed securities 12,820 (357 ) — (331 ) (3,238 ) — 3,636 12,530 (1,292 ) Other asset-backed securities 35,886 3,070 16,531 (8,868 ) (8,549 ) — 5,115 43,185 3,563 Loans and other receivables 78,051 (2,753 ) 38,780 (13,898 ) (2,438 ) — 742 98,484 (1,277 ) Investments at fair value 421,098 35,594 10,169 (18,302 ) — — (39,820 ) 408,739 35,594 FXCM term loan 73,600 (11,412 ) 1,500 — (7,088 ) — — 56,600 (11,412 ) Securities purchased under agreements to resell — — — — — 25,000 — 25,000 — Liabilities: Trading liabilities: Corporate equity securities $ 78 $ (74 ) $ (1,520 ) $ 1,737 $ — $ — $ — $ 221 $ — Corporate debt securities 730 (148 ) (7 ) 1 22 — 71 669 90 Commercial mortgage-backed securities 70 (70 ) — — — — — — — Loans 3,420 (191 ) (1,678 ) 1,537 — — 6,340 9,428 364 Net derivatives (2) 28,975 (14,760 ) (25 ) 4,175 1,974 — 27,110 47,449 7,565 Long-term debt (1) 283,139 1,163 — — (5,585 ) 39,385 (81,540 ) 236,562 (813 ) (1) Realized and unrealized gains (losses) are primarily reported in Principal transactions revenues in the Consolidated Statements of Operations. Changes in instrument-specific credit risk related to structured notes are included in our Consolidated Statements of Comprehensive Income (Loss), net of tax. Changes in unrealized gains (losses) included in other comprehensive income (loss) for instruments still held at May 31, 2019 were losses of $0.4 million . (2) Net derivatives represent Trading assets - Derivatives and Trading liabilities - Derivatives. Analysis of Level 3 Assets and Liabilities for the three months ended May 31, 2019 During the three months ended May 31, 2019 , transfers of assets of $31.7 million from Level 2 to Level 3 of the fair value hierarchy are primarily attributed to: • Loans and other receivables of $11.3 million and other asset-backed securities of $7.6 million due to reduced pricing transparency. During the three months ended May 31, 2019 , transfers of assets of $79.5 million from Level 3 to Level 2 are primarily attributed to: • Investments at fair value of $39.8 million , CDOs and CLOs of $17.6 million and loans and other receivables of $10.5 million due to greater pricing transparency supporting classification into Level 2. During the three months ended May 31, 2019 , transfers of liabilities of $57.4 million from Level 2 to Level 3 of the fair value hierarchy are primarily attributed to: • Structured notes of $9.5 million and net derivatives of $41.5 million due to reduced market and pricing transparency. During the three months ended May 31, 2019 , transfers of liabilities of $105.4 million from Level 3 to Level 2 of the fair value hierarchy are primarily attributed to: • Structured notes of $91.0 million and net derivatives of $14.4 million due to greater market transparency. Net gains on Level 3 assets were $23.2 million and net gains on Level 3 liabilities were $14.1 million for the three months ended May 31, 2019 . Net gains on Level 3 assets were primarily due to increased market values across investments at fair value and other asset-backed securities, partially offset by decreased market values in the FXCM term loan and across loans and other receivables. Net gains on Level 3 liabilities were primarily due to decreased market values across certain derivatives. The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the six months ended May 31, 2019 (in thousands): Six Months Ended May 31, 2019 Balance, November 30, 2018 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, May 31, 2019 Changes in unrealized gains/losses included in earnings relating to instruments still held at May 31, 2019 (1) Assets: Trading assets: Corporate equity securities $ 52,192 $ 5,239 $ 785 $ (2,031 ) $ (720 ) $ — $ 4,107 $ 59,572 $ 7,085 Corporate debt sec

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	May 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments Derivative Financial Instruments Derivative activities are recorded at fair value in the Consolidated Statements of Financial Condition in Trading assets and Trading liabilities, net of cash paid or received under credit support agreements and on a net counterparty basis when a legally enforceable right to offset exists under a master netting agreement. Predominantly, Jefferies Group enters into derivative transactions to satisfy the needs of its clients and to manage its own exposure to market and credit risks resulting from its trading activities. In addition, Jefferies Group applies hedge accounting to an interest rate swap that has been designated as a fair value hedge of the changes in fair value due to the benchmark interest rate for certain fixed rate senior long-term debt. See Notes 3 and 19 for additional disclosures about derivative financial instruments. Derivatives are subject to various risks similar to other financial instruments, including market, credit and operational risk. The risks of derivatives should not be viewed in isolation, but rather should be considered on an aggregate basis along with our other trading-related activities. Jefferies Group manages the risks associated with derivatives on an aggregate basis along with the risks associated with proprietary trading as part of its firm wide risk management policies. In connection with Jefferies Group's derivative activities, Jefferies Group may enter into International Swaps and Derivatives Association, Inc. ("ISDA") master netting agreements or similar agreements with counterparties. The following tables present the fair value and related number of derivative contracts at May 31, 2019 and November 30, 2018 categorized by type of derivative contract and the platform on which these derivatives are transacted. The fair value of assets/liabilities represents our receivable/payable for derivative financial instruments, gross of counterparty netting and cash collateral received and pledged. The following tables also provide information regarding (1) the extent to which, under enforceable master netting arrangements, such balances are presented net in our Consolidated Statements of Financial Condition as appropriate under GAAP and (2) the extent to which other rights of setoff associated with these arrangements exist and could have an effect on our financial position (in thousands, except contract amounts): Assets Liabilities Fair Value Number of Contracts (2) Fair Value Number of Contracts (2) May 31, 2019 (1) Derivatives designated as accounting hedges: Interest rate contracts: Cleared OTC $ 13,348 1 $ — — Total derivatives designated as accounting hedges 13,348 — Derivatives not designated as accounting hedges: Interest rate contracts: Exchange-traded 1,070 41,702 1,835 64,221 Cleared OTC 897,615 2,907 952,865 3,360 Bilateral OTC 405,268 2,002 239,880 752 Foreign exchange contracts: Exchange-traded — 36 — 59 Bilateral OTC 400,432 12,320 412,485 12,544 Equity contracts: Exchange-traded 621,087 1,703,475 921,170 1,327,055 Bilateral OTC 166,068 3,195 374,665 3,835 Commodity contracts: Exchange-traded 6,330 6,492 503 6,904 Bilateral OTC 30,792 2,283 4,355 1,787 Credit contracts: Cleared OTC 3,177 24 4,595 24 Bilateral OTC 9,075 98 11,898 58 Total derivatives not designated as accounting hedges 2,540,914 2,924,251 Total gross derivative assets/ liabilities: Exchange-traded 628,487 923,508 Cleared OTC 914,140 957,460 Bilateral OTC 1,011,635 1,043,283 Amounts offset in Consolidated Statement of Financial Condition (3): Exchange-traded (603,556 ) (603,556 ) Cleared OTC (897,715 ) (902,183 ) Bilateral OTC (696,492 ) (864,269 ) Net amounts per Consolidated Statement of Financial Condition (4) $ 356,499 $ 554,243 (continued) Assets Liabilities Fair Value Number of Contracts (2) Fair Value Number of Contracts (2) November 30, 2018 (1) Derivatives designated as accounting hedges: Interest rate contracts: Cleared OTC $ — — $ 29,647 1 Total derivatives designated as accounting hedges — 29,647 Derivatives not designated as accounting hedges: Interest rate contracts: Exchange-traded 924 32,159 513 66,095 Cleared OTC 422,670 2,095 411,833 2,394 Bilateral OTC 372,899 1,398 491,697 816 Foreign exchange contracts: Exchange-traded 42 538 2 690 Cleared OTC — — 36 3 Bilateral OTC 311,228 9,548 314,951 9,909 Equity contracts: Exchange-traded 1,202,927 2,104,684 2,061,137 1,779,836 Bilateral OTC 207,221 5,126 315,996 2,764 Commodity contracts: Exchange-traded 27,632 7,272 272 4,185 Bilateral OTC 10,191 1,274 1,445 1,498 Credit contracts: Cleared OTC 11,204 7 1,556 14 Bilateral OTC 13,768 123 11,618 79 Total derivatives not designated as accounting hedges 2,580,706 3,611,056 Total gross derivative assets/ liabilities: Exchange-traded 1,231,525 2,061,924 Cleared OTC 433,874 443,072 Bilateral OTC 915,307 1,135,707 Amounts offset in Consolidated Statement of Financial Condition (3): Exchange-traded (1,190,951 ) (1,190,951 ) Cleared OTC (407,351 ) (418,779 ) Bilateral OTC (815,629 ) (903,320 ) Net amounts per Consolidated Statement of Financial Condition (4) $ 166,775 $ 1,127,653 (1) Exchange-traded derivatives include derivatives executed on an organized exchange. Cleared OTC derivatives include derivatives executed bilaterally and subsequently novated to and cleared through central clearing counterparties. Bilateral OTC derivatives include derivatives executed and settled bilaterally without the use of an organized exchange or central clearing counterparty. (2) Number of exchange-traded contracts may include open futures contracts. The unsettled fair value of these futures contracts is included in Receivables and Payables, expense accruals and other liabilities in our Consolidated Statements of Financial Condition. (3) Amounts netted include both netting by counterparty and for cash collateral paid or received. (4) We have not received or pledged additional collateral under master netting agreements and/or other credit support agreements that is eligible to be offset beyond what has been offset in the Consolidated Statements of Financial Condition. The following table provides information related to gains (losses) recognized in Interest expense of Jefferies Group in the Consolidated Statements of Operations on a fair value hedge (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Interest rate swaps $ 27,204 $ 19 $ 41,791 $ (21,202 ) Long-term debt (28,213 ) 120 (43,769 ) 22,835 Total $ (1,009 ) $ 139 $ (1,978 ) $ 1,633 The following table presents unrealized and realized gains (losses) on derivative contracts which are primarily recognized in Principal transactions revenues in the Consolidated Statements of Operations, which are utilized in connection with our client activities and our economic risk management activities (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Interest rate contracts $ (34,020 ) $ (4,860 ) $ (103,851 ) $ 22,102 Foreign exchange contracts 2,284 8,390 2,108 11,518 Equity contracts (92,109 ) (45,419 ) (120,590 ) (250,565 ) Commodity contracts 21,045 (10,991 ) 1,772 (16,305 ) Credit contracts 4,818 1,731 8,913 740 Total $ (97,982 ) $ (51,149 ) $ (211,648 ) $ (232,510 ) The net gains (losses) on derivative contracts in the table above are one of a number of activities comprising Jefferies Group's business activities and are before consideration of economic hedging transactions, which generally offset the net gains (losses) included above. Jefferies Group substantially mitigates its exposure to market risk on its cash instruments through derivative contracts, which generally provide offsetting revenues, and Jefferies Group manages the risk associated with these contracts in the context of its overall risk management framework. OTC Derivatives. The following tables set forth by remaining contract maturity the fair value of OTC derivative assets and liabilities as reflected in the Consolidated Statement of Financial Condition at May 31, 2019 (in thousands): OTC Derivative Assets (1) (2) (3) 0-12 Months 1-5 Years Greater Than 5 Years Cross- Maturity Netting (4) Total Commodity swaps, options and forwards $ 15,034 $ 15,758 $ — $ (4,355 ) $ 26,437 Equity swaps and options 40,703 26 4,031 (2,233 ) 42,527 Credit default swaps 807 966 2,294 (469 ) 3,598 Total return swaps 9,675 51,481 — (1,607 ) 59,549 Foreign currency forwards, swaps and options 53,115 21,850 — (15,480 ) 59,485 Interest rate swaps, options and forwards 75,339 169,577 118,624 (70,534 ) 293,006 Total $ 194,673 $ 259,658 $ 124,949 $ (94,678 ) 484,602 Cross product counterparty netting (39,313 ) Total OTC derivative assets included in Trading assets $ 445,289 (1) At May 31, 2019 , we held exchange-traded derivative assets, other derivative assets and other credit agreements with a fair value of $28.3 million , which are not included in this table. (2) OTC derivative assets in the table above are gross of collateral received. OTC derivative assets are recorded net of collateral received in the Consolidated Statements of Financial Condition. At May 31, 2019 , cash collateral received was $117.1 million . (3) Derivative fair values include counterparty netting within product category. (4) Amounts represent the netting of receivable balances with payable balances for the same counterparty within product category across maturity categories. OTC Derivative Liabilities (1) (2) (3) 0-12 Months 1-5 Years Greater Than 5 Years Cross-Maturity Netting (4) Total Commodity swaps, options and forwards $ 1,986 $ 2,369 $ — $ (4,355 ) $ — Equity swaps and options 28,465 118,560 40,591 (2,233 ) 185,383 Credit default swaps 40 2,535 3,583 (469 ) 5,689 Total return swaps 89,603 37,003 — (1,607 ) 124,999 Foreign currency forwards, swaps and options 67,386 18,225 1,404 (15,480 ) 71,535 Fixed income forwards 600 — — — 600 Interest rate swaps, options and forwards 46,443 81,306 116,012 (70,534 ) 173,227 Total $ 234,523 $ 259,998 $ 161,590 $ (94,678 ) 561,433 Cross product counterparty netting (39,313 ) Total OTC derivative liabilities included in Trading liabilities $ 522,120 (1) At May 31, 2019 , we held exchange-traded derivative liabilities, other derivative liabilities and other credit agreements with a fair value of $321.4 million , which are not included in this table. (2) OTC derivative liabilities in the table above are gross of collateral pledged. OTC derivative liabilities are recorded net of collateral pledged in the Consolidated Statements of Financial Condition. At May 31, 2019 , cash collateral pledged was $289.3 million . (3) Derivative fair values include counterparty netting within product category. (4) Amounts represent the netting of receivable balances with payable balances for the same counterparty within product category across maturity categories. At May 31, 2019 , the counterparty credit quality with respect to the fair value of our OTC derivative assets was as follows (in thousands): Counterparty credit quality (1): A- or higher $ 94,830 BBB- to BBB+ 24,884 BB+ or lower 194,336 Unrated 131,239 Total $ 445,289 (1) Jefferies Group utilizes internal credit ratings determined by Jefferies Group's Risk Management department. Credit ratings determined by Jefferies Group Risk Management use methodologies that produce ratings generally consistent with those produced by external rating agencies. Credit Related Derivative Contracts The external credit ratings of the underlyings or referenced assets for Jefferies Group's written credit related derivative contracts are as follows (in millions): External Credit Rating Investment Grade Non-investment grade Unrated Total Notional May 31, 2019 Credit protection sold: Index credit default swaps $ 3.0 $ 76.0 $ — $ 79.0 Single name credit default swaps $ 14.1 $ 50.4 $ 32.9 $ 97.4 November 30, 2018 Credit protection sold: Index credit default swaps $ 25.7 $ 167.4 $ — $ 193.1 Single name credit default swaps $ 57.7 $ 84.5 $ 3.0 $ 145.2 Contingent Features Certain of Jefferies Group's derivative instruments contain provisions that require their debt to maintain an investment grade credit rating from each of the major credit rating agencies. If Jefferies Group's debt were to fall below investment grade, it would be in violation of these provisions and the counterparties to the derivative instruments could request immediate payment or demand immediate and ongoing full overnight collateralization on Jefferies Group's derivative instruments in liability positions. The following table presents the aggregate fair value of all derivative instruments with such credit-risk-related contingent features that are in a liability position, the collateral amounts posted or received in the normal course of business and the potential collateral Jefferies Group would have been required to return and/or post additionally to its counterparties if the credit-risk-related contingent features underlying these agreements were triggered (in millions): May 31, November 30, 2018 Derivative instrument liabilities with credit-risk-related contingent features $ 41.1 $ 93.5 Collateral posted $ (11.6 ) $ (61.5 ) Collateral received $ 30.5 $ 91.5 Return of and additional collateral required in the event of a credit rating downgrade below investment grade (1) $ 59.9 $ 123.3 (1) These potential outflows include initial margin received from counterparties at the execution of the derivative contract. The initial margin will be returned if counterparties elect to terminate the contract after a downgrade. Other Derivatives Vitesse Energy Finance uses swaps and call and put options in order to reduce exposure to future oil price fluctuations. Vitesse Energy Finance accounts for the derivative instruments at fair value. The gains and losses associated with the change in fair value of the derivatives are recorded in Other revenues.

Collateralized Transactions

Collateralized Transactions	6 Months Ended
	May 31, 2019
Collateralized Transactions [Abstract]
Collateralized Transactions	Collateralized Transactions Jefferies Group enters into secured borrowing and lending arrangements to obtain collateral necessary to effect settlement, finance inventory positions, meet customer needs or re-lend as part of dealer operations. Jefferies Group monitors the fair value of the securities loaned and borrowed on a daily basis as compared with the related payable or receivable, and requests additional collateral or returns excess collateral, as appropriate. Jefferies Group pledges financial instruments as collateral under repurchase agreements, securities lending agreements and other secured arrangements, including clearing arrangements. Jefferies Group's agreements with counterparties generally contain contractual provisions allowing the counterparty the right to sell or repledge the collateral. Pledged securities owned that can be sold or repledged by the counterparty are included in Financial instruments owned, at fair value and noted parenthetically as Securities pledged in our Consolidated Statements of Financial Condition. The following tables set forth the carrying value of securities lending arrangements and repurchase agreements by class of collateral pledged and remaining contractual maturity (in thousands): Collateral Pledged Securities Lending Arrangements Repurchase Agreements Total May 31, 2019 Corporate equity securities $ 2,006,944 $ 391,858 $ 2,398,802 Corporate debt securities 252,023 1,826,868 2,078,891 Mortgage- and asset-backed securities — 2,077,535 2,077,535 U.S. government and federal agency securities 68,838 12,234,328 12,303,166 Municipal securities — 612,747 612,747 Sovereign obligations — 3,184,103 3,184,103 Loans and other receivables — 765,751 765,751 Total $ 2,327,805 $ 21,093,190 $ 23,420,995 November 30, 2018 Corporate equity securities $ 1,505,218 $ 487,124 $ 1,992,342 Corporate debt securities 333,221 1,853,309 2,186,530 Mortgage- and asset-backed securities 249 2,820,543 2,820,792 U.S. government and federal agency securities — 8,181,947 8,181,947 Municipal securities — 604,274 604,274 Sovereign obligations — 2,945,521 2,945,521 Loans and other receivables — 300,768 300,768 Total $ 1,838,688 $ 17,193,486 $ 19,032,174 Contractual Maturity Overnight and Continuous Up to 30 Days 30 to 90 Days Greater than 90 Days Total May 31, 2019 Securities lending arrangements $ 1,382,312 $ — $ 644,948 $ 300,545 $ 2,327,805 Repurchase agreements 8,754,902 3,154,270 4,402,247 4,781,771 21,093,190 Total $ 10,137,214 $ 3,154,270 $ 5,047,195 $ 5,082,316 $ 23,420,995 November 30, 2018 Securities lending arrangements $ 807,347 $ — $ 560,417 $ 470,924 $ 1,838,688 Repurchase agreements 7,849,052 1,915,325 6,042,951 1,386,158 17,193,486 Total $ 8,656,399 $ 1,915,325 $ 6,603,368 $ 1,857,082 $ 19,032,174 Jefferies Group receives securities as collateral under resale agreements, securities borrowing transactions and customer margin loans. Jefferies Group also receives securities as collateral in connection with securities-for-securities transactions in which it is the lender of securities. In many instances, Jefferies Group is permitted by contract to rehypothecate the securities received as collateral. These securities may be used to secure repurchase agreements, enter into securities lending transactions, satisfy margin requirements on derivative transactions or cover short positions. At May 31, 2019 and November 30, 2018 , the approximate fair value of securities received as collateral by Jefferies Group that may be sold or repledged was $29.4 billion and $23.1 billion , respectively. At May 31, 2019 and November 30, 2018 , a substantial portion of the securities received by Jefferies Group have been sold or repledged. Offsetting of Securities Financing Agreements To manage its exposure to credit risk associated with securities financing transactions, Jefferies Group may enter into master netting agreements and collateral arrangements with counterparties. Generally, transactions are executed under standard industry agreements, including, but not limited to, master securities lending agreements (securities lending transactions) and master repurchase agreements (repurchase transactions). The following table provides information regarding repurchase agreements and securities borrowing and lending arrangements that are recognized in the Consolidated Statements of Financial Condition and (1) the extent to which, under enforceable master netting arrangements, such balances are presented net in the Consolidated Statements of Financial Condition as appropriate under GAAP and (2) the extent to which other rights of setoff associated with these arrangements exist and could have an effect on our consolidated financial position. (In thousands) Gross Amounts Netting in Consolidated Statements of Financial Condition Net Amounts in Consolidated Statements of Financial Condition Additional Amounts Available for Setoff (1) Available Collateral (2) Net Amount (3) Assets at May 31, 2019 Securities borrowing arrangements $ 7,713,886 $ — $ 7,713,886 $ (570,248 ) $ (1,585,821 ) $ 5,557,817 Reverse repurchase agreements 16,259,065 (12,231,733 ) 4,027,332 (526,433 ) (3,452,962 ) 47,937 Liabilities at May 31, 2019 Securities lending arrangements $ 2,327,805 $ — $ 2,327,805 $ (570,248 ) $ (1,694,029 ) $ 63,528 Repurchase agreements 21,093,190 (12,231,733 ) 8,861,457 (526,433 ) (7,103,993 ) 1,231,031 Assets at November 30, 2018 Securities borrowing arrangements $ 6,538,212 $ — $ 6,538,212 $ (468,778 ) $ (1,193,986 ) $ 4,875,448 Reverse repurchase agreements 11,336,175 (8,550,417 ) 2,785,758 (609,225 ) (2,126,730 ) 49,803 Liabilities at November 30, 2018 Securities lending arrangements $ 1,838,688 $ — $ 1,838,688 $ (468,778 ) $ (1,343,704 ) $ 26,206 Repurchase agreements 17,193,486 (8,550,417 ) 8,643,069 (609,225 ) (7,070,967 ) 962,877 (1) Under master netting agreements with its counterparties, Jefferies Group has the legal right of offset with a counterparty, which incorporates all of the counterparty’s outstanding rights and obligations under the arrangement. These balances reflect additional credit risk mitigation that is available by a counterparty in the event of a counterparty’s default, but which are not netted in the Consolidated Statement of Financial Condition because other netting provisions of GAAP are not met. (2) Includes securities received or paid under collateral arrangements with counterparties that could be liquidated in the event of a counterparty default and thus offset against a counterparty’s rights and obligations under the respective repurchase agreements or securities borrowing or lending arrangements. (3) At May 31, 2019 , amounts include $5,469.0 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $5,273.8 million , and $1,119.3 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $1,147.8 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable. At November 30, 2018 , amounts include $4,825.7 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $4,711.7 million , and $931.7 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $963.6 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable. Cash and Securities Segregated and on Deposit for Regulatory Purposes or Deposited with Clearing and Depository Organizations Cash and securities deposited with clearing and depository organizations and segregated in accordance with regulatory regulations totaled $543.4 million and $708.0 million at May 31, 2019 and November 30, 2018 , respectively. Segregated cash and securities consist of deposits in accordance with Rule 15c3-3 of the Securities Exchange Act of 1934, which subjects Jefferies LLC as a broker-dealer carrying customer accounts to requirements related to maintaining cash or qualified securities in segregated special reserve bank accounts for the exclusive benefit of its customers.

Securitization Activities

Securitization Activities	6 Months Ended
	May 31, 2019
Securitization Activities [Abstract]
Securitization Activities	Securitization Activities Jefferies Group engages in securitization activities related to corporate loans, commercial mortgage loans, consumer loans and mortgage-backed and other asset-backed securities. In securitization transactions, Jefferies Group transfers these assets to special purpose entities ("SPEs") and acts as the placement or structuring agent for the beneficial interests sold to investors by the SPE. A significant portion of the securitization transactions are the securitization of assets issued or guaranteed by U.S. government agencies. These SPEs generally meet the criteria of variable interest entities ("VIEs"); however, the SPEs are generally not consolidated as Jefferies Group is not considered the primary beneficiary for these SPEs. Jefferies Group accounts for its securitization transactions as sales, provided it has relinquished control over the transferred assets. Transferred assets are carried at fair value with unrealized gains and losses reflected in Principal transactions revenues in the Consolidated Statements of Operations prior to the identification and isolation for securitization. Subsequently, revenues recognized upon securitization are reflected as net underwriting revenues. Jefferies Group generally receives cash proceeds in connection with the transfer of assets to an SPE. Jefferies Group may, however, have continuing involvement with the transferred assets, which is limited to retaining one or more tranches of the securitization (primarily senior and subordinated debt securities in the form of mortgage- and other asset-backed securities or CLOs). These securities are included in Trading assets in our Consolidated Statements of Financial Condition and are generally initially categorized as Level 2 within the fair value hierarchy. The following table presents activity related to Jefferies Group's securitizations that were accounted for as sales in which it had continuing involvement (in millions): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Transferred assets $ 844.5 $ 1,042.6 $ 2,105.1 $ 3,800.3 Proceeds on new securitizations $ 845.8 $ 1,043.4 $ 2,177.0 $ 3,802.3 Cash flows received on retained interests $ 24.3 $ 7.8 $ 36.6 $ 23.8 Jefferies Group has no explicit or implicit arrangements to provide additional financial support to these SPEs, has no liabilities related to these SPEs and has no outstanding derivative contracts executed in connection with these securitizations at May 31, 2019 and November 30, 2018 . The following table summarizes Jefferies Group's retained interests in SPEs where it transferred assets and has continuing involvement and received sale accounting treatment (in millions): May 31, 2019 November 30, 2018 Securitization Type Total Assets Retained Interests Total Assets Retained Interests U.S. government agency residential mortgage-backed securities $ 12,886.5 $ 121.5 $ 13,633.5 $ 365.3 U.S. government agency commercial mortgage-backed securities $ 1,374.9 $ 48.3 $ 2,027.6 $ 185.6 CLOs $ 4,943.3 $ 56.9 $ 3,512.0 $ 20.9 Consumer and other loans $ 657.1 $ 44.8 $ 604.1 $ 48.9 Total assets represent the unpaid principal amount of assets in the SPEs in which Jefferies Group has continuing involvement and are presented solely to provide information regarding the size of the transactions and the size of the underlying assets supporting its retained interests, and are not considered representative of the risk of potential loss. Assets retained in connection with a securitization transaction represent the fair value of the securities of one or more tranches issued by an SPE, including senior and subordinated tranches. Jefferies Group's risk of loss is limited to this fair value amount which is included in total Trading assets in our Consolidated Statements of Financial Condition. Although not obligated, in connection with secondary market-making activities Jefferies Group may make a market in the securities issued by these SPEs. In these market-making transactions, Jefferies Group buys these securities from and sells these securities to investors. Securities purchased through these market-making activities are not considered to be continuing involvement in these SPEs. To the extent Jefferies Group purchased securities through these market-making activities and Jefferies Group is not deemed to be the primary beneficiary of the VIE, these securities are included in agency and non-agency mortgage- and asset-backed securitizations in the nonconsolidated VIEs section presented in Note 8. Foursight Capital also utilizes SPEs to securitize automobile loans receivable. These SPEs are VIEs and our subsidiary is the primary beneficiary; the related assets and the secured borrowings are recognized in the Consolidated Statements of Financial Condition. These secured borrowings do not have recourse to our subsidiary's general credit. See Note 8 for further information on securitization activities and VIEs.

Available for Sale Securities a

Available for Sale Securities and Other Investments	6 Months Ended
	May 31, 2019
Investments [Abstract]
Available for Sale Securities and Other Investments	Available for Sale Securities and Other Investments The amortized cost, gross unrealized gains and losses and estimated fair value of investments classified as available for sale are as follows (in thousands): Amortized Gross Gross Estimated November 30, 2018 Bonds and notes: U.S. government securities $ 1,073,038 $ 1 $ 183 $ 1,072,856 Residential mortgage-backed securities 211,209 376 1,067 210,518 Commercial mortgage-backed securities 16,068 — 426 15,642 Other asset-backed securities 111,447 1 578 110,870 Total Available for sale securities $ 1,411,762 $ 378 $ 2,254 $ 1,409,886 Proceeds from the maturities and sales of available for sale securities during the six months ended May 31, 2019 , were primarily invested in prime and government money market funds, which are classified as Cash and cash equivalents in the Consolidated Statement of Financial Condition at May 31, 2019 . At May 31, 2019 and November 30, 2018 , the Company had other investments (classified as Other assets and Loans to and investments in associated companies) in which fair values are not readily determinable, aggregating $210.1 million and $230.0 million , respectively. There were no unrealized gains, losses or impairments recognized on these investments during the six months ended May 31, 2019 and June 30, 2018

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	May 31, 2019
Variable Interest Entities [Abstract]
Variable Interest Entities	Variable Interest Entities VIEs are entities in which equity investors lack the characteristics of a controlling financial interest. VIEs are consolidated by the primary beneficiary. The primary beneficiary is the party who has both (1) the power to direct the activities of a VIE that most significantly impact the entity's economic performance and (2) an obligation to absorb losses of the entity or a right to receive benefits from the entity that could potentially be significant to the entity. Our variable interests in VIEs include debt and equity interests, equity interests in associated companies, commitments, guarantees and certain fees. Our involvement with VIEs arises primarily from the following activities, but also includes other activities discussed below: • Purchases of securities in connection with Jefferies Group's trading and secondary market-making activities; • Retained interests held as a result of securitization activities, including the resecuritization of mortgage- and other asset-backed securities and the securitization of commercial mortgage, corporate and consumer loans; • Acting as placement agent and/or underwriter in connection with client-sponsored securitizations; • Financing of agency and non-agency mortgage- and other asset-backed securities; • Warehouse funding arrangements for client-sponsored consumer loan vehicles and CLOs through participation certificates, forward sale agreements and revolving loan and note commitments; and • Loans to, investments in and fees from various investment vehicles. We determine whether we are the primary beneficiary of a VIE upon our initial involvement with the VIE and we reassess whether we are the primary beneficiary of a VIE on an ongoing basis. Our determination of whether we are the primary beneficiary of a VIE is based upon the facts and circumstances for each VIE and requires judgment. Our considerations in determining the VIE's most significant activities and whether we have power to direct those activities include, but are not limited to, the VIE's purpose and design and the risks passed through to investors, the voting interests of the VIE, management, service and/or other agreements of the VIE, involvement in the VIE's initial design and the existence of explicit or implicit financial guarantees. In situations where we have determined that the power over the VIE's significant activities is shared, we assess whether we are the party with the power over the most significant activities. If we are the party with the power over the most significant activities, we meet the "power" criteria of the primary beneficiary. If we do not have the power over the most significant activities or we determine that decisions require consent of each sharing party, we do not meet the "power" criteria of the primary beneficiary. We assess our variable interests in a VIE both individually and in aggregate to determine whether we have an obligation to absorb losses of or a right to receive benefits from the VIE that could potentially be significant to the VIE. The determination of whether our variable interest is significant to the VIE requires judgment. In determining the significance of our variable interest, we consider the terms, characteristics and size of the variable interests, the design and characteristics of the VIE, our involvement in the VIE and our market-making activities related to the variable interests. Consolidated VIEs The following table presents information about the assets and liabilities of our consolidated securitization vehicles VIEs, which are presented in our Consolidated Statements of Financial Condition in the respective asset and liability categories (in millions). The assets and liabilities in the table below are presented prior to consolidation and thus a portion of these assets and liabilities are eliminated in consolidation. May 31, November 30, 2018 Securities purchased under agreement to resell (1) $ 1,266.9 $ 883.1 Receivables 549.9 626.0 Other 36.2 78.4 Total assets $ 1,853.0 $ 1,587.5 Other secured financings (2) $ 1,798.9 $ 1,535.3 Other (3) 43.5 45.9 Total liabilities $ 1,842.4 $ 1,581.2 (1) Securities purchased under agreements to resell represent an amount due under a collateralized transaction on related consolidated entities, which are eliminated in consolidation. (2) Approximately $1.0 million of the secured financings represent amounts held by Jefferies Group in inventory and are eliminated in consolidation at November 30, 2018 . (3) Includes $41.5 million and $44.1 million at May 31, 2019 and November 30, 2018 , respectively, of intercompany payables that are eliminated in consolidation. Securitization Vehicles. Jefferies Group is the primary beneficiary of asset-backed financing vehicles to which Jefferies Group sells agency and non-agency residential and commercial mortgage loans, and mortgage-backed securities and consumer loans pursuant to the terms of a master repurchase agreement. Jefferies Group's variable interests in these vehicles consist of its collateral margin maintenance obligations under the master repurchase agreement, which Jefferies Group manages, and retained interests in securities issued. The assets of these VIEs consist of reverse repurchase agreements, which are available for the benefit of the vehicle's debt holders. The creditors of these VIEs do not have recourse to Jefferies Group's general credit and each such VIE's assets are not available to satisfy any other debt. At May 31, 2019 and November 30, 2018 , Foursight Capital is the primary beneficiary of SPEs it utilized to securitize automobile loans receivable. Foursight Capital acts as the servicer for which it receives a fee, and owns an equity interest in the SPEs. The notes issued by the SPEs are secured solely by the assets of the SPEs and do not have recourse to Foursight Capital’s general credit and the assets of the VIEs are not available to satisfy any other debt. Nonconsolidated VIEs The following tables present information about our variable interests in nonconsolidated VIEs (in millions): Financial Statement Carrying Amount Maximum Exposure to Loss VIE Assets Assets Liabilities May 31, 2019 CLOs $ 114.9 $ 0.6 $ 830.7 $ 7,980.2 Consumer loan and other asset-backed vehicles 427.3 — 570.1 3,322.6 Related party private equity vehicles 31.2 — 49.0 92.0 Other investment vehicles 507.0 — 526.8 8,144.2 Total $ 1,080.4 $ 0.6 $ 1,976.6 $ 19,539.0 November 30, 2018 CLOs $ 45.2 $ — $ 571.4 $ 3,281.9 Consumer loan and other asset-backed vehicles 462.1 — 807.1 3,273.1 Related party private equity vehicles 35.5 — 53.5 108.3 Other investment vehicles 203.6 — 214.7 5,719.1 Total $ 746.4 $ — $ 1,646.7 $ 12,382.4 Our maximum exposure to loss often differs from the carrying value of the variable interests. The maximum exposure to loss is dependent on the nature of the variable interests in the VIEs and is limited to the notional amounts of certain loan and equity commitments and guarantees. Our maximum exposure to loss does not include the offsetting benefit of any financial instruments that may be utilized to hedge the risks associated with its variable interests and is not reduced by the amount of collateral held as part of a transaction with a VIE. Collateralized Loan Obligations. Assets collateralizing the CLOs include bank loans, participation interests and sub-investment grade and senior secured U.S. loans. Jefferies Group underwrites securities issued in CLO transactions on behalf of sponsors and provides advisory services to the sponsors. Jefferies Group may also sell corporate loans to the CLOs. Jefferies Group's variable interests in connection with CLOs where it has been involved in providing underwriting and/or advisory services consist of the following: • Forward sale agreements whereby Jefferies Group commits to sell, at a fixed price, corporate loans and ownership interests in an entity holding such corporate loans to CLOs; • Warehouse funding arrangements in the form of participation interests in corporate loans held by CLOs and commitments to fund such participation interests; • Trading positions in securities issued in a CLO transaction; and • Investments in variable funding notes issued by CLOs. Consumer Loan and Other Asset-Backed Vehicles. Jefferies Group provides financing and lending related services to certain client-sponsored VIEs in the form of revolving funding note agreements, revolving credit facilities, forward purchase agreements and reverse repurchase agreements. The underlying assets, which are collateralizing the vehicles, are primarily composed of unsecured consumer and small business loans, and trust claims. In addition, Jefferies Group may provide structuring and advisory services and act as an underwriter or placement agent for securities issued by the vehicles. Jefferies Group does not control the activities of these entities. Related Party Private Equity Vehicles. Jefferies Group committed to invest equity in private equity funds (the "JCP Funds") managed by Jefferies Capital Partners, LLC (the "JCP Manager"). Additionally, Jefferies Group committed to invest equity in the general partners of the JCP Funds (the "JCP General Partners") and the JCP Manager. Jefferies Group's variable interests in the JCP Funds, JCP General Partners and JCP Manager (collectively, the "JCP Entities") consist of equity interests that, in total, provide Jefferies Group with limited and general partner investment returns of the JCP Funds, a portion of the carried interest earned by the JCP General Partners and a portion of the management fees earned by the JCP Manager. At May 31, 2019 and November 30, 2018 , Jefferies Group's total equity commitment in the JCP Entities was $139.3 million and $139.3 million , respectively, of which $121.5 million and $121.3 million , respectively, had been funded. The carrying value of Jefferies Group's equity investments in the JCP Entities was $31.2 million and $35.5 million at May 31, 2019 and November 30, 2018 , respectively. Jefferies Group's exposure to loss is limited to the total of its carrying value and unfunded equity commitment. The assets of the JCP Entities primarily consist of private equity and equity related investments. Other Investment Vehicles. The carrying amount of our equity investment was $507.0 million and $203.6 million at May 31, 2019 and November 30, 2018 , respectively. Our unfunded equity commitment related to these investments totaled $19.8 million and $11.1 million at May 31, 2019 and November 30, 2018 , respectively. Our exposure to loss is limited to the total of our carrying value and unfunded equity commitment. These investment vehicles have assets primarily consisting of private and public equity investments, debt instruments, trade and insurance claims and various oil and gas assets. Mortgage- and Other Asset-Backed Securitization Vehicles. In connection with Jefferies Group's secondary trading and market-making activities, Jefferies Group buys and sells agency and non-agency mortgage-backed securities and other asset-backed securities, which are issued by third-party securitization SPEs and are generally considered variable interests in VIEs. Securities issued by securitization SPEs are backed by residential mortgage loans, U.S. agency collateralized mortgage obligations, commercial mortgage loans, CDOs and CLOs and other consumer loans, such as installment receivables, auto loans and student loans. These securities are accounted for at fair value and included in Trading assets in our Consolidated Statements of Financial Condition. Jefferies Group has no other involvement with the related SPEs and therefore does not consolidate these entities. Jefferies Group also engages in underwriting, placement and structuring activities for third-party-sponsored securitization trusts generally through agency (FNMA ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac") or GNMA ("Ginnie Mae")) or non-agency-sponsored SPEs and may purchase loans or mortgage-backed securities from third parties that are subsequently transferred into the securitization trusts. The securitizations are backed by residential and commercial mortgage, home equity and auto loans. Jefferies Group does not consolidate agency-sponsored securitizations as it does not have the power to direct the activities of the SPEs that most significantly impact their economic performance. Further, Jefferies Group is not the servicer of non-agency-sponsored securitizations and therefore does not have power to direct the most significant activities of the SPEs and accordingly, does not consolidate these entities. Jefferies Group may retain unsold senior and/or subordinated interests at the time of securitization in the form of securities issued by the SPEs. At May 31, 2019 and November 30, 2018 , Jefferies Group held $1,525.1 million and $2,913.0 million of agency mortgage-backed securities, respectively, and $34.7 million and $170.5 million of non-agency mortgage- and other asset-backed securities, respectively, as a result of its secondary trading and market-making activities, and underwriting, placement and structuring activities. Jefferies Group's maximum exposure to loss on these securities is limited to the carrying value of its investments in these securities. These mortgage- and other asset-backed securitization vehicles discussed are not included in the above table containing information about Jefferies Group's variable interests in nonconsolidated VIEs. FXCM is considered a VIE and our term loan and equity ownership are variable interests. We have determined that we are not the primary beneficiary of FXCM because we do not have the power to direct the activities that most significantly impact FXCM's performance. Therefore, we do not consolidate FXCM and we account for our equity interest under the equity method as an investment in an associated company. Our maximum exposure to loss as a result of our involvement with FXCM is limited to the carrying value of the term loan ( $56.6 million ) and the investment in associated company ( $70.0 million ), which totaled $126.6 million at May 31, 2019 .

Loans to and Investments In Ass

Loans to and Investments In Associated Companies	6 Months Ended
	May 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Loans to and Investments in Associated Companies	Loans to and Investments in Associated Companies A summary of Loans to and investments in associated companies accounted for under the equity method of accounting during the six months ended May 31, 2019 and June 30, 2018 is as follows (in thousands): Loans to and investments in associated companies as of beginning of period Income (losses) related to associated companies Income (losses) related to Jefferies Group's associated companies (1) Contributions to (distributions from) associated companies, net Other Loans to and investments in associated companies as of end of period 2019 Jefferies Finance $ 728,560 $ — $ 7,936 $ (63,070 ) $ — $ 673,426 Berkadia (2) 245,228 — 47,945 (18,124 ) 515 275,564 National Beef 653,630 62,051 — (54,940 ) (9 ) 660,732 FXCM (3) 75,031 (5,016 ) — — 10 70,025 Linkem 165,157 (8,581 ) — 49,590 (3,973 ) 202,193 HomeFed 337,542 (517 ) — — — 337,025 Other 212,184 1,546 (1,560 ) (16,122 ) 881 196,929 Total $ 2,417,332 $ 49,483 $ 54,321 $ (102,666 ) $ (2,576 ) $ 2,415,894 2018 Jefferies Finance $ 655,467 $ — $ 30,566 $ 31,461 $ — $ 717,494 Berkadia (2) 210,594 51,742 — (17,853 ) (720 ) 243,763 National Beef — 24,401 — (13,099 ) 592,239 603,541 FXCM (3) 158,856 (15,040 ) — — (34 ) 143,782 Garcadia companies (4) 179,143 20,955 — (22,915 ) (177,183 ) — Linkem 192,136 (12,764 ) — 542 (2,321 ) 177,593 HomeFed 341,874 4,445 — — — 346,319 Other 328,759 (8,286 ) (5,732 ) (25,412 ) 1,123 290,452 Total $ 2,066,829 $ 65,453 $ 24,834 $ (47,276 ) $ 413,104 $ 2,522,944 (1) Primarily classified in Other revenues. (2) In the fourth quarter of 2018, we transferred our interest in Berkadia to Jefferies Group. (3) As further described in Note 3, our investment in FXCM includes both our equity method investment in FXCM and our term loan with FXCM. Our equity method investment is included in Loans to and investments in associated companies and our term loan is included in Trading assets, at fair value in our Consolidated Statements of Financial Condition. (4) During the third quarter of 2018, we sold 100% of our equity interests in Garcadia and our associated real estate to our former partners, the Garff family. Income (losses) related to associated companies includes the following (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 National Beef $ 34,946 $ 24,401 $ 62,051 $ 24,401 Berkadia — 25,461 — 51,742 FXCM (2,300 ) (6,816 ) (5,016 ) (15,040 ) Garcadia companies — 9,572 — 20,955 Linkem (6,960 ) (5,309 ) (8,581 ) (12,764 ) HomeFed (2,500 ) (7,165 ) (517 ) 4,445 Other (1,016 ) (6,791 ) 1,546 (8,286 ) Total $ 22,170 $ 33,353 $ 49,483 $ 65,453 Income (losses) related to Jefferies Group's associated companies (primarily classified in Other revenues) includes the following (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Jefferies Finance $ 14,935 $ 20,733 $ 7,936 $ 30,566 Berkadia 25,296 — 47,945 — Other 2,753 (1,504 ) (1,560 ) (5,732 ) Total $ 42,984 $ 19,229 $ 54,321 $ 24,834 Jefferies Finance Through Jefferies Group, we own 50% of Jefferies Finance LLC ("Jefferies Finance"), a joint venture with Massachusetts Mutual Life Insurance Company ("MassMutual"). Jefferies Finance is a commercial finance company whose primary focus is the origination and syndication of senior secured debt to middle market and growth companies in the form of term and revolving loans. Loans are originated primarily through the investment banking efforts of Jefferies Group. Jefferies Finance may also originate other debt products such as second lien term, bridge and mezzanine loans, as well as related equity co-investments. Jefferies Finance also purchases syndicated loans in the secondary market and acts as an investment advisor for various loan funds. At May 31, 2019 , Jefferies Group and MassMutual each had equity commitments to Jefferies Finance of $750.0 million . At May 31, 2019 , $643.7 million of Jefferies Group's commitment was funded. The investment commitment is scheduled to expire on March 1, 2020 with automatic one year extensions absent a 60 -day termination notice by either party. Jefferies Finance has executed a Secured Revolving Credit Facility with Jefferies Group and MassMutual, to be funded equally, to support loan underwritings by Jefferies Finance, which bears interest based on the interest rates of the related Jefferies Finance underwritten loans and is secured by the underlying loans funded by the proceeds of the facility. The total Secured Revolving Credit Facility is a committed amount of $500.0 million at May 31, 2019 and November 30, 2018 . Advances are shared equally between Jefferies Group and MassMutual. The facility is scheduled to mature on March 1, 2020 with automatic one year extensions absent a 60 -day termination notice by either party. At May 31, 2019 and November 30, 2018 , none of Jefferies Group's $250.0 million commitment was funded. Jefferies Group recognized interest income and unfunded commitment fees related to the facility of $0.3 million and $0.7 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $0.6 million and $1.7 million during the six months ended May 31, 2019 and June 30, 2018 , respectively. Jefferies Group engages in debt capital markets transactions with Jefferies Finance related to the originations and syndications of loans by Jefferies Finance. In connection with such services, Jefferies Group earned fees of $69.3 million and $109.6 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $91.2 million and $211.0 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, which are recognized in Investment banking revenues in the Consolidated Statements of Operations. In addition, Jefferies Group paid fees to Jefferies Finance in respect of certain loans originated by Jefferies Finance of $8.2 million and $14.9 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $13.6 million and $33.4 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, which are recognized within Selling, general and other expenses in the Consolidated Statements of Operations. Jefferies Group acts as a placement agent for CLOs managed by Jefferies Finance, for which Jefferies Group recognized fees of $0.0 million and $2.4 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $1.3 million and $2.7 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, which are included in Investment banking revenues in the Consolidated Statements of Operations. At May 31, 2019 and November 30, 2018 , Jefferies Group held securities issued by CLOs managed by Jefferies Finance, which are included in Trading assets. Additionally, Jefferies Group has entered into participation agreements and derivative contracts with Jefferies Finance based upon certain securities issued by the CLO. Gains (losses) related to the derivative contracts were not material. Jefferies Group acted as underwriter in connection with terms loans issued by Jefferies Finance. Underwriting fees charged to Jefferies Finance were $1.0 million and $1.0 million during the three and six months ended May 31, 2019 , respectively. Under a service agreement, Jefferies Group charged Jefferies Finance $11.2 million and $8.9 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $38.3 million and $35.0 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, for services provided. At May 31, 2019 , Jefferies Group had a receivable from Jefferies Finance, included in Other assets in the Consolidated Statement of Financial Condition, of $20.4 million and a payable to Jefferies Finance, related to cash deposited with Jefferies Group, included in Payables, expense accruals and other liabilities in the Consolidated Statement of Financial Condition of $13.7 million . At November 30, 2018 , Jefferies Group had a receivable from Jefferies Finance, included in Other assets in the Consolidated Statement of Financial Condition, of $35.2 million and a payable to Jefferies Finance, related to cash deposited with Jefferies Group, included in Payables, expense accruals and other liabilities in the Consolidated Statement of Financial Condition, of $14.1 million . Jefferies Group enters into OTC foreign exchange contracts with Jefferies Finance. In connection with these contracts Jefferies Group had $0.1 million recorded in Trading liabilities in our Consolidated Statement of Financial Condition at May 31, 2019 and $0.2 million recorded in Payables, expense accruals and other liabilities and $0.4 million included in Trading liabilities in our Consolidated Statement of Financial Condition at November 30, 2018 . On March 28, 2019, Jefferies Group entered into a promissory note with Jefferies Finance with a principal amount of $1.0 billion , the proceeds of which were used in connection with Jefferies Group's investment banking loan syndication activities. Jefferies Group repaid Jefferies Finance the entire outstanding principal amount of this note on May 15, 2019. Interest paid on the note of $3.8 million is included in Interest expense of Jefferies Group within the Consolidated Statements of Operations. Berkadia Berkadia is a commercial mortgage banking and servicing joint venture formed in 2009 with Berkshire Hathaway Inc. We and Berkshire Hathaway each contributed $217.2 million of equity capital to the joint venture and each have a 50% membership interest in Berkadia. We are entitled to receive 45% of the profits. Berkadia originates commercial/multifamily real estate loans that are sold to U.S. government agencies, and originates and brokers commercial/multifamily mortgage loans which are not part of government agency programs. Berkadia is an investment sales advisor focused on the multifamily industry. Berkadia is a servicer of commercial real estate loans in the U.S., performing primary, master and special servicing functions for U.S. government agency programs, commercial mortgage-backed securities transactions, banks, insurance companies and other financial institutions. Berkadia uses all of the proceeds from the commercial paper sales of an affiliate of Berkadia to fund new mortgage loans, servicer advances, investments and other working capital requirements. Repayment of the commercial paper is supported by a $1.5 billion surety policy issued by a Berkshire Hathaway insurance subsidiary and corporate guaranty, and we have agreed to reimburse Berkshire Hathaway for one-half of any losses incurred thereunder. At May 31, 2019 , the aggregate amount of commercial paper outstanding was $1.47 billion . National Beef National Beef processes and markets fresh and chilled boxed beef, ground beef, beef by-products, consumer-ready beef and pork, and wet blue leather for domestic and international markets. As discussed in Note 23, on June 5, 2018, we completed the sale of 48% of National Beef to Marfrig, reducing our ownership in National Beef to 31% . As of the closing of the sale on June 5, 2018, we deconsolidated our investment in National Beef and account for our remaining interest under the equity method of accounting. We are amortizing our basis difference between the estimated fair value and the underlying book value of National Beef's customer relationships, tradenames, cattle supply contracts and property, plant and equipment over their respective useful lives (weighted average life of 15 years ). FXCM We have a 50% voting interest in FXCM, a provider of online foreign exchange trading services. We account for our equity interest in FXCM on a one month lag. We are amortizing our basis difference between the estimated fair value and the underlying book value of FXCM customer relationships, technology and tradename over their respective useful lives (weighted average life of 11 years ). Garcadia Garcadia was a joint venture between us and Garff Enterprises, Inc. ("Garff") that owned and operated automobile dealerships comprised of domestic and foreign automobile makers. In the third quarter of 2018, we sold 100% of our equity interests in Garcadia and our associated real estate to our former partners, the Garff family. Linkem We own approximately 42% of the common shares of Linkem, a fast-growing fixed wireless broadband services provider in Italy. In addition, we own convertible preferred stock, which is automatically convertible to common shares in 2022. If all of our convertible preferred stock was converted, it would increase our ownership to approximately 54% of Linkem’s common equity at May 31, 2019 . We have approximately 48% of the total voting securities of Linkem. Additionally, we have made shareholder loans to Linkem with principal outstanding of $49.4 million at May 31, 2019 . These shareholder loans bear interest at 5% per annum and are due June 30, 2024. We account for our equity interest in Linkem on a two month lag. HomeFed At May 31, 2019 , we owned 10,852,123 shares of HomeFed’s common stock, representing approximately 70% of HomeFed’s outstanding common shares; however, we had contractually agreed to limit our voting rights such that we would not be able to vote more than 45% of HomeFed’s total voting securities voting on any matter, assuming all HomeFed shares not owned by us were voted. HomeFed develops and owns residential and mixed-use real estate properties. HomeFed was a public company traded on the Over-the-Counter Bulletin Board (Symbol: HOFD). As a result of a 1998 distribution to all of our shareholders, approximately 5% of HomeFed was beneficially owned by our Chairman at May 31, 2019 . Three of our executives served on the board of directors of HomeFed, including our Chairman who served as HomeFed’s Chairman, and our President. Since we did not control HomeFed, our investment in HomeFed was accounted for under the equity method as an investment in an associated company. We accounted for our equity interest in HomeFed on a two month lag. Through June 30, 2019, we owned an approximate 70% equity interest of HomeFed. On July 1, 2019, we completed a merger with HomeFed by which we acquired the remaining common stock of HomeFed. From July 1, 2019, the results of HomeFed will be reflected on a consolidated basis. In connection with the merger, HomeFed stockholders received two shares of our common stock for each share of HomeFed common stock. A total of 9.3 million shares were issued. As an offset to these issued shares, our Board of Directors has authorized the repurchase of 9.25 million shares in the open market. Other The following table provides required summarized data for certain equity method investments, including those accounted for under the fair value option. The table includes Jefferies Finance, Berkadia and Fiesta Restaurant Group, Inc. for the six months ended May 31, 2019 and June 30, 2018 ; HRG for the six month period ended June 30, 2018; and National Beef for the six months ended May 31, 2019 and for the period subsequent to the closing of the transaction with Marfrig on June 5, 2018 through June 30, 2018 (in thousands): For the Six Months Ended May 31, June 30, Revenues $ 4,736,971 $ 2,899,221 Income from continuing operations before extraordinary items $ 360,966 $ 330,849 Net income $ 360,966 $ 832,349

Intangible Assets, Net and Good

Intangible Assets, Net and Goodwill	6 Months Ended
	May 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Net and Goodwill	Intangible Assets, Net and Goodwill A summary of Intangible assets, net and goodwill is as follows (in thousands): May 31, November 30, 2018 Indefinite-lived intangibles: Exchange and clearing organization membership interests and registrations $ 8,555 $ 8,524 Amortizable intangibles: Customer and other relationships, net of accumulated amortization of $106,731 and $102,579 63,691 67,894 Trademarks and tradenames, net of accumulated amortization of $22,895 and $21,086 105,315 107,262 Other, net of accumulated amortization of $4,882 and $4,339 4,068 4,611 Total intangible assets, net 181,629 188,291 Goodwill: Jefferies Group 1,697,842 1,698,381 Other operations 3,459 3,459 Total goodwill 1,701,301 1,701,840 Total intangible assets, net and goodwill $ 1,882,930 $ 1,890,131 Amortization expense on intangible assets included in Income from continuing operations was $3.3 million and $3.3 million for the three months ended May 31, 2019 and June 30, 2018 , respectively, and $6.6 million and $6.5 million for the six months ended May 31, 2019 and June 30, 2018 , respectively. The estimated aggregate future amortization expense for the intangible assets for each of the next five years is as follows (in thousands): Remainder of current year $ 6,719 2020 $ 13,439 2021 $ 13,085 2022 $ 10,110 2023 $ 9,001

Short-Term Borrowings

Short-Term Borrowings	6 Months Ended
	May 31, 2019
Debt Disclosure [Abstract]
Short-Term Borrowings	Short-Term Borrowings Jefferies Group's short-term borrowings, which mature in one year or less, are as follows (in thousands): May 31, November 30, 2018 Bank loans $ 454,590 $ 330,942 Floating rate puttable notes 55,845 56,550 Total short-term borrowings $ 510,435 $ 387,492 At May 31, 2019 and November 30, 2018 , the weighted average interest rate on short-term borrowings outstanding was 3.58% and 3.08% per annum, respectively. On March 28, 2019, Jefferies Group entered into a promissory note with Jefferies Finance, which was repaid on May 15, 2019. See Note 9 for further information. On December 27, 2018, one of Jefferies Group's subsidiaries entered into a credit facility agreement ("Jefferies Group Credit Facility") with JPMorgan Chase Bank, N.A. for a committed amount of $135.0 million . Interest is based on an annual alternative base rate or an adjusted London Interbank Offered Rate ("LIBOR"), as defined in the Jefferies Group Credit Facility. The Jefferies Group Credit Facility contains certain covenants that, among other things, require Jefferies Group LLC to maintain a specified level of tangible net worth. The covenants also require the borrower to maintain specified leverage amounts and impose certain restrictions on the borrower’s future indebtedness. During the six months ended May 31, 2019 , Jefferies Group was in compliance with all debt covenants under the Jefferies Group Credit Facility. The Bank of New York Mellon has agreed to make revolving intraday credit advances ("Intraday Credit Facility") to Jefferies Group for an aggregate committed amount of $150.0 million . The Intraday Credit Facility contains financial covenants, which include a minimum regulatory net capital requirement for Jefferies Group. Interest is based on the higher of the Federal funds effective rate plus 0.5% or the prime rate. At May 31, 2019 , Jefferies Group was in compliance with debt covenants under the Intraday Credit Facility.

Long-Term Debt

Long-Term Debt	6 Months Ended
	May 31, 2019
Aggregate Indebtedness [Abstract]
Long-Term Debt	Long-Term Debt The principal amount (net of unamortized discounts, premiums and debt issuance costs), stated interest rate and maturity date of outstanding debt are as follows (dollars in thousands): May 31, November 30, 2018 Parent Company Debt: Senior Notes: 5.50% Senior Notes due October 18, 2023, $750,000 principal $ 743,993 $ 743,397 6.625% Senior Notes due October 23, 2043, $250,000 principal 246,744 246,719 Total long-term debt – Parent Company 990,737 990,116 Subsidiary Debt (non-recourse to Parent Company): Jefferies Group: 8.50% Senior Notes, due July 15, 2019, $644,800 and $680,800 principal 648,382 699,659 2.375% Euro Medium Term Notes, due May 20, 2020, $558,450 and $565,500 principal 557,926 564,702 6.875% Senior Notes, due April 15, 2021, $750,000 principal 783,370 791,814 2.25% Euro Medium Term Notes, due July 13, 2022, $4,468 and $4,524 principal 4,225 4,243 5.125% Senior Notes, due January 20, 2023, $600,000 principal 611,492 612,928 4.85% Senior Notes, due January 15, 2027, $750,000 principal (1) 753,509 709,484 6.45% Senior Debentures, due June 8, 2027, $350,000 principal 372,563 373,669 4.15% Senior Notes, due January 23, 2030, $1,000,000 principal 988,220 987,788 6.25% Senior Debentures, due January 15, 2036, $500,000 principal 511,464 511,662 6.50% Senior Notes, due January 20, 2043, $400,000 principal 420,435 420,625 Structured Notes (2) 819,509 686,170 Jefferies Group Revolving Credit Facility 188,817 183,539 Foursight Capital Credit Facilities 123,579 — Other 86,756 81,164 Total long-term debt – subsidiaries 6,870,247 6,627,447 Long-term debt $ 7,860,984 $ 7,617,563 (1) Amount includes a loss of $43.8 million and a gain of $22.8 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, associated with an interest rate swap based on its designation as a fair value hedge. See Note 4 for further information. (2) These structured notes contain various interest rate payment terms and are accounted for at fair value, with changes in fair value resulting from a change in the instrument specific credit risk presented in Accumulated other comprehensive income (loss) and changes in fair value resulting from non-credit components recognized in Principal transactions revenues. Subsidiary Debt : Structured notes with a total principal amount of approximately $119.6 million , net of retirements, were issued during the six months ended May 31, 2019 . Additionally, during the six months ended May 31, 2019 , Jefferies Group repaid $36.0 million of its 8.50% Senior Notes. Jefferies Group has a senior secured revolving credit facility ("Jefferies Group Revolving Credit Facility") with a group of commercial banks for an aggregate principal amount of $190.0 million . The Jefferies Group Revolving Credit Facility contains certain financial covenants, including, but not limited to, restrictions on future indebtedness of certain of its subsidiaries and its' minimum tangible net worth, liquidity requirements and minimum capital requirements. Interest is based on an annual alternative base rate or an adjusted LIBOR, as defined in the Jefferies Group Revolving Credit Facility agreement. The obligations of certain of Jefferies Group's subsidiaries under the Jefferies Group Revolving Credit Facility are secured by substantially all its assets. At May 31, 2019 , Jefferies Group was in compliance with the debt covenants under the Jefferies Group Revolving Credit Facility. At May 31, 2019 , Foursight Capital's credit facilities consisted of two warehouse credit commitments aggregating $175.0 million , which mature in May 2021. One of the credit facilities bears interest based on the three month LIBOR plus a credit spread fixed through its maturity and the other credit facility bears interest based on the one month LIBOR plus a credit spread fixed through its maturity. As a condition of the credit facilities, Foursight Capital is obligated to maintain cash reserves in an amount equal to the quoted price of an interest rate cap sufficient to meet the hedging requirements of the credit commitment. The credit facilities are secured by first priority liens on auto loan receivables owed to Foursight Capital of approximately $148.3 million at May 31, 2019 .

Mezzanine Equity

Mezzanine Equity	6 Months Ended
	May 31, 2019
Temporary Equity Disclosure [Abstract]
Mezzanine Equity	Mezzanine Equity Redeemable Noncontrolling Interests The following table rolls forward National Beef’s redeemable noncontrolling interests activity (prior to its deconsolidation in June 2018) during the six months ended June 30, 2018 (in thousands): Balance, January 1, 2018 $ 412,128 Income allocated to redeemable noncontrolling interests 37,141 Distributions to redeemable noncontrolling interests (70,681 ) Increase in fair value of redeemable noncontrolling interests 21,404 Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustment prior to deconsolidation (237,669 ) Deconsolidation of National Beef (162,323 ) Balance, June 30, 2018 $ — At May 31, 2019 and November 30, 2018 , redeemable noncontrolling interests include other redeemable noncontrolling interests of $18.9 million and $19.8 million , respectively, primarily related to our oil and gas exploration and development businesses. Mandatorily Redeemable Convertible Preferred Shares In connection with our acquisition of Jefferies Group in March 2013, we issued a new series of 3.25% Cumulative Convertible Preferred Shares ("Preferred Shares") ( $125.0 million at mandatory redemption value) in exchange for Jefferies Group's outstanding 3.25% Series A-1 Cumulative Convertible Preferred Stock. The Preferred Shares have a 3.25% annual, cumulative cash dividend and are currently convertible into 4,162,200 common shares, an effective conversion price of $30.03 per share. The holders of the Preferred Shares are also entitled to an additional quarterly payment in the event we declare and pay a dividend on our common stock in an amount greater than $0.0625 per common share per quarter. The additional quarterly payment would be paid to the holders of Preferred Shares on an as converted basis and on a per share basis would equal the quarterly dividend declared and paid to a holder of a share of common stock in excess of $0.0625 per share. In the third quarter of 2017, we increased our quarterly dividend from $0.0625 to $0.10 per common share. In the third quarter of 2018, we increased our quarterly dividend from $0.10 to $0.125 per common share. These increased the preferred stock dividend from $2.3 million for the six months ended June 30, 2018 to $2.6 million for the six months ended May 31, 2019 . The Preferred Shares are callable beginning in 2023 at a price of $1,000 per share plus accrued interest and are mandatorily redeemable in 2038.

Compensation Plans

Compensation Plans	6 Months Ended
	May 31, 2019
Share-based Compensation [Abstract]
Compensation Plans	Compensation Plans Restricted Stock and Restricted Stock Units. Restricted stock and restricted stock units ("RSUs") may be granted to new employees as "sign-on" awards, to existing employees as "retention" awards and to certain executive officers as awards for multiple years. Sign-on and retention awards are generally subject to annual ratable vesting over a four year service period and are amortized as compensation expense on a straight-line basis over the related four years . Restricted stock and RSUs are granted to certain senior executives with market, performance and service conditions. Market conditions are incorporated into the grant-date fair value of senior executive awards using a Monte Carlo valuation model. Compensation expense for awards with market conditions is recognized over the service period and is not reversed if the market condition is not met. Awards with performance conditions are amortized over the service period if it is determined that it is probable that the performance condition will be achieved. Stock-Based Compensation Expense. Compensation and benefits expense included $13.1 million and $12.8 million for the three months ended May 31, 2019 and June 30, 2018 , respectively, and $24.9 million and $25.2 million for the six months ended May 31, 2019 and June 30, 2018 , respectively, for share-based compensation expense relating to grants made under our share-based compensation plans. Total compensation cost includes the amortization of sign-on, retention and senior executive awards, less forfeitures and clawbacks. The total tax benefit recognized in results of operations related to share-based compensation expenses was $3.4 million and $3.1 million for the three months ended May 31, 2019 and June 30, 2018 , respectively, and $6.3 million and $6.0 million for the six months ended May 31, 2019 and June 30, 2018 , respectively. At May 31, 2019 , total unrecognized compensation cost related to nonvested share-based compensation plans was $99.4 million ; this cost is expected to be recognized over a weighted average period of three years . At May 31, 2019 , there were 1,883,000 shares of restricted stock outstanding with future service required, 6,010,000 RSUs outstanding with future service required (including target RSUs issuable under the senior executive compensation plan), 14,565,000 RSUs outstanding with no future service required and 909,000 shares issuable under other plans. The maximum potential increase to common shares outstanding resulting from these outstanding awards is 21,484,000 . Restricted Cash Awards. Jefferies Group provides compensation to certain new and existing employees in the form of loans and/or other cash awards which are subject to ratable vesting terms with service requirements. These awards are amortized to compensation expense over the relevant service period, which is generally considered to start at the beginning of the annual compensation year. At May 31, 2019 , the remaining unamortized amount of the restricted cash awards was $550.9 million and is included within Other assets in the Consolidated Statement of Financial Condition; this cost is expected to be recognized over a weighted average period of three years .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	May 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Activity in accumulated other comprehensive income (loss) is reflected in the Consolidated Statements of Comprehensive Income (Loss) and Consolidated Statements of Changes in Equity but not in the Consolidated Statements of Operations. A summary of accumulated other comprehensive income (loss), net of taxes is as follows (in thousands): May 31, November 30, 2018 Net unrealized gains on available for sale securities $ 33 $ 542,832 Net unrealized foreign exchange losses (202,595 ) (193,402 ) Net unrealized gains (losses) on instrument specific credit risk 14,916 (5,728 ) Net unrealized gains on cash flow hedges — 470 Net minimum pension liability (55,178 ) (55,886 ) $ (242,824 ) $ 288,286 Amounts reclassified out of accumulated other comprehensive income (loss) to net income are as follows (in thousands): Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Consolidated Statements of Operations For the Six Months Ended May 31, June 30, Net unrealized gains (losses) on available for sale securities, net of income tax provision (benefit) of $(545,054) and $37 $ 543,178 $ 103 Other revenues and Income tax provision (benefit) Net unrealized foreign exchange gains (losses), net of income tax provision (benefit) of $0 and $(16) — 20,459 Other revenues and Selling, general and other expenses Net unrealized (gains) losses on instrument specific credit risk, net of income tax provision (benefit) of $(166) and $78 (493 ) 270 Principal transactions revenues Net unrealized gains on cash flow hedges, net of income tax provision (benefit) of $161 and $0 470 — Other revenues Amortization of defined benefit pension plan actuarial losses, net of income tax benefit of $(241) and $(339) (708 ) (919 ) Selling, general and other expenses, which includes pension expense Other pension, net of income tax benefit of $0 and $0 — (5,344 ) Compensation and benefits expense Total reclassifications for the period, net of tax $ 542,447 $ 14,569 During the second quarter of 2019, we completed the sale of our available for sale portfolio. In connection therewith, we recognized a tax benefit of $544.6 million during the three and six months ended May 31, 2019 . Unrealized gains and losses on available for sale securities, and their associated tax impacts, are recorded directly to equity as part of the Accumulated other comprehensive income (loss) balance. Following the portfolio approach, when unrealized gains and losses and their associated tax impacts are recorded at a then current tax rate, and then realized later at a different tax rate, the difference between the tax impact initially recorded in Accumulated other comprehensive income (loss) and the tax impact removed from Accumulated other comprehensive income (loss) upon realization remains in Accumulated other comprehensive income (loss) until the disposal of the portfolio and is referred to as a "lodged tax effect." Large changes in the fair value of our available for sale securities, primarily during 2008 through 2010, combined with fluctuations in our tax rate during those periods, generated a lodged tax benefit of $544.6 million . As a result of recent steps to improve our Corporate investment management efforts, we sold the remaining portion of our available for sale portfolio in the second quarter of 2019, which resulted in the realization of the $544.6 million tax benefit. While this realization did not impact total equity, it resulted in a tax benefit reflected in the Consolidated Statement of Operations of $544.6 million and, as a result, Retained earnings increased and Accumulated other comprehensive income (loss) decreased by corresponding amounts. The remaining net unrealized gains on available for sale securities at May 31, 2019 represents Jefferies Group's share of Berkadia's net unrealized gains on available for sale securities recorded under the equity method of accounting. In connection with the acquisition of Jefferies Bache from Prudential on July 1, 2011, Jefferies Group acquired a defined benefit pension plan located in Germany (the "German Pension Plan") for the benefit of eligible employees of Jefferies Bache in that territory. On December 28, 2017, a Liquidation Insurance Contract was entered into between Jefferies Bache Limited and Generali Lebensversicherung AG ("Generali") to transfer the defined benefit pension obligations and insurance contracts to Generali, for approximately €6.5 million , which was paid in January 2018 and released Jefferies Group from any and all obligations under the German Pension Plan. This transaction was completed in the first quarter of 2018. In connection with the transfer of the German Pension Plan, $5.3 million was reclassified to Compensation and benefits expense in the Consolidated Statement of Operations from Accumulated other comprehensive income (loss) during the six months ended June 30, 2018

Revenues from Contracts with Cu

Revenues from Contracts with Customers	6 Months Ended
	May 31, 2019
Revenue from Contract with Customer [Abstract]
Revenues from Contracts with Customers	Revenues from Contracts with Customers The following table presents our total revenues separated for our revenues from contracts with customers and our other sources of revenues (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Revenues from contracts with customers: Commissions and other fees $ 159,685 $ 157,704 $ 306,819 $ 305,606 Investment banking 430,087 500,297 715,683 940,288 Manufacturing revenues 90,237 114,735 165,662 213,100 Other 70,197 61,817 132,029 103,975 Total revenue from contracts with customers 750,206 834,553 1,320,193 1,562,969 Other sources of revenue: Principal transactions 240,189 53,755 486,371 199,418 Interest income 445,967 327,314 832,811 602,536 Other 74,009 28,204 66,008 40,014 Total revenue from other sources 760,165 409,273 1,385,190 841,968 Total revenues $ 1,510,371 $ 1,243,826 $ 2,705,383 $ 2,404,937 Revenue from contracts with customers is recognized when, or as, we satisfy our performance obligations by transferring the promised goods or services to the customers. A good or service is transferred to a customer when, or as, the customer obtains control of that good or service. A performance obligation may be satisfied over time or at a point in time. Revenue from a performance obligation satisfied over time is recognized by measuring our progress in satisfying the performance obligation in a manner that depicts the transfer of the goods or services to the customer. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that we determine the customer obtains control over the promised good or service. The amount of revenue recognized reflects the consideration we expect to be entitled to in exchange for those promised goods or services (the "transaction price"). In determining the transaction price, we consider multiple factors, including the effects of variable consideration. Variable consideration is included in the transaction price only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainties with respect to the amount are resolved. In determining when to include variable consideration in the transaction price, we consider the range of possible outcomes, the predictive value of our past experiences, the time period of when uncertainties expect to be resolved and the amount of consideration that is susceptible to factors outside of our influence, such as market volatility or the judgment and actions of third parties. The following provides detailed information on the recognition of our revenues from contracts with customers: Commissions and Other Fees. Jefferies Group earns commission revenues by executing, settling and clearing transactions for clients primarily in equity, equity-related and futures products. Trade execution and clearing services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commission revenues are generally paid on settlement date and Jefferies Group records a receivable between trade-date and payment on settlement date. Jefferies Group permits institutional customers to allocate a portion of their gross commissions to pay for research products and other services provided by third parties. The amounts allocated for those purposes are commonly referred to as soft dollar arrangements. Jefferies Group acts as an agent in the soft dollar arrangements as the customer controls the use of the soft dollars and directs Jefferies Group's payments to third-party service providers on its behalf. Accordingly, amounts allocated to soft dollar arrangements are netted against commission revenues in our Consolidated Statements of Operations. Jefferies Group earns account advisory and distribution fees in connection with wealth management services. Account advisory fees are recognized over time using the time-elapsed method as Jefferies Group determined that the customer simultaneously receives and consumes the benefits of investment advisory services as they are provided. Account advisory fees may be paid in advance of a specified service period or in arrears at the end of the specified service period (e.g., quarterly). Account advisory fees paid in advance are initially deferred within Payables, expense accruals and other liabilities in the Consolidated Statements of Financial Condition. Distribution fees are variable and recognized when the uncertainties with respect to the amounts are resolved. Investment Banking. Jefferies Group provides its clients with a full range of capital markets and financial advisory services. Capital markets services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings and equity-linked convertible securities transactions and structuring, underwriting and distributing public and private debt, including investment grade debt, high yield bonds, leveraged loans, municipal bonds and mortgage- and asset-backed securities. Underwriting and placement agent revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the capital markets offering at that point. Costs associated with capital markets transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within Selling, general and other expenses in the Consolidated Statements of Operations as Jefferies Group is acting as a principal in the arrangement. Any expenses reimbursed by its clients are recognized as Investment banking revenues. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within Payables, expense accruals and other liabilities in the Consolidated Statements of Financial Condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as Jefferies Group's clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees Jefferies Group receives for its advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third-party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. Jefferies Group recognizes a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at a point in time. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within their respective expense category in the Consolidated Statements of Operations and any expenses reimbursed by Jefferies Group's clients are recognized as Investment banking revenues. Asset Management Fees. Jefferies Group earns management and performance fees, recorded in Other revenues, in connection with investment advisory services provided to various funds and accounts, which are satisfied over time and measured using a time elapsed measure of progress as the customer receives the benefits of the services evenly throughout the term of the contract. Management and performance fees are considered variable as they are subject to fluctuation (e.g., changes in assets under management, market performance) and/ or are contingent on a future event during the measurement period (e.g., meeting a specified benchmark) and are recognized only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is resolved. Management fees are generally based on month-end assets under management or an agreed upon notional amount and are included in the transaction price at the end of each month when the assets under management or notional amount is known. Performance fees are received when the return on assets under management for a specified performance period exceed certain benchmark returns, "high-water marks" or other performance targets. The performance period related to performance fees is annual or semi-annual. Accordingly, performance fee revenue will generally be recognized only at the end of the performance period to the extent that the benchmark return has been met. Manufacturing Revenues. Idaho Timber's primary business consists of the sale of lumber that is manufactured or remanufactured at one of its locations. Agreements with customers for these sales specify the type, quantity and price of products to be delivered as well as the delivery date and payment terms. The transaction price is fixed at the time of sale and revenue is generally recognized when the customer takes control of the product. Disaggregation of Revenue The following presents our revenues from contracts with customers disaggregated by major business activity and primary geographic regions (in thousands): Reportable Segments Major Business Activity: Jefferies Group Merchant Banking Corporate Consolidation Adjustments Total Three months ended May 31, 2019 Jefferies Group: Equities (1) $ 164,361 $ — $ — $ (88 ) $ 164,273 Fixed Income (1) 3,529 — — — 3,529 Investment Banking - Capital markets 251,533 — — — 251,533 Investment Banking - Advisory 178,554 — — — 178,554 Asset Management 4,550 — — — 4,550 Manufacturing revenues — 90,237 — — 90,237 Oil and gas revenues — 47,652 — — 47,652 Other revenues — 9,878 — — 9,878 Total revenues from contracts with customers $ 602,527 $ 147,767 $ — $ (88 ) $ 750,206 Primary Geographic Region: Americas $ 491,366 $ 147,505 $ — $ (88 ) $ 638,783 Europe, Middle East and Africa 92,560 223 — — 92,783 Asia 18,601 39 — — 18,640 Total revenues from contracts with customers $ 602,527 $ 147,767 $ — $ (88 ) $ 750,206 Three months ended June 30, 2018 Jefferies Group: Equities (1) $ 160,360 $ — $ — $ (400 ) $ 159,960 Fixed Income (1) 4,546 — — — 4,546 Investment Banking - Capital markets 283,315 — — — 283,315 Investment Banking - Advisory 216,982 — — — 216,982 Asset Management 6,016 — — — 6,016 Manufacturing revenues — 114,735 — — 114,735 Oil and gas revenues — 39,905 — — 39,905 Other revenues — 9,094 — — 9,094 Total revenues from contracts with customers $ 671,219 $ 163,734 $ — $ (400 ) $ 834,553 Primary Geographic Region: Americas $ 572,376 $ 163,454 $ — $ (400 ) $ 735,430 Europe, Middle East and Africa 78,861 207 — — 79,068 Asia 19,982 73 — — 20,055 Total revenues from contracts with customers $ 671,219 $ 163,734 $ — $ (400 ) $ 834,553 (1) Revenues from contracts with customers associated with the equities and fixed income businesses primarily represent commissions and other fee revenue. Reportable Segments Major Business Activity: Jefferies Group Merchant Banking Corporate Consolidation Adjustments Total Six months ended May 31, 2019 Jefferies Group: Equities (1) $ 316,422 $ — $ — $ (280 ) $ 316,142 Fixed Income (1) 6,597 — — — 6,597 Investment Banking - Capital markets 356,647 — — — 356,647 Investment Banking - Advisory 359,036 — — — 359,036 Asset Management 11,219 — — — 11,219 Manufacturing revenues — 165,662 — — 165,662 Oil and gas revenues — 84,017 — — 84,017 Other revenues — 20,873 — — 20,873 Total revenues from contracts with customers $ 1,049,921 $ 270,552 $ — $ (280 ) $ 1,320,193 Primary Geographic Region: Americas $ 818,123 $ 270,032 $ — $ (280 ) $ 1,087,875 Europe, Middle East and Africa 196,053 457 — — 196,510 Asia 35,745 63 — — 35,808 Total revenues from contracts with customers $ 1,049,921 $ 270,552 $ — $ (280 ) $ 1,320,193 Six months ended June 30, 2018 Jefferies Group: Equities (1) $ 311,990 $ — $ — $ (400 ) $ 311,590 Fixed Income (1) 7,504 — — — 7,504 Investment Banking - Capital markets 532,149 — — — 532,149 Investment Banking - Advisory 408,139 — — — 408,139 Asset Management 10,946 — — — 10,946 Manufacturing revenues — 213,100 — — 213,100 Oil and gas revenues — 60,235 — — 60,235 Other revenues — 19,306 — — 19,306 Total revenues from contracts with customers $ 1,270,728 $ 292,641 $ — $ (400 ) $ 1,562,969 Primary Geographic Region: Americas $ 1,093,230 $ 292,031 $ — $ (400 ) $ 1,384,861 Europe, Middle East and Africa 140,189 462 — — 140,651 Asia 37,309 148 — — 37,457 Total revenues from contracts with customers $ 1,270,728 $ 292,641 $ — $ (400 ) $ 1,562,969 (1) Revenues from contracts with customers associated with the equities and fixed income businesses primarily represent commissions and other fee revenue. Information on Remaining Performance Obligations and Revenue Recognized from Past Performance We do not disclose information about remaining performance obligations pertaining to contracts that have an original expected duration of one year or less. The transaction price allocated to remaining unsatisfied or partially unsatisfied performance obligations with an original expected duration exceeding one year was not material at May 31, 2019 . Investment banking advisory fees that are contingent upon completion of a specific milestone and fees associated with certain distribution services are also excluded as the fees are considered variable and not included in the transaction price at May 31, 2019 . Jefferies Group recognized $15.3 million and $15.0 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $23.0 million and $17.1 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, of revenue related to performance obligations satisfied (or partially satisfied) in previous periods, mainly due to resolving uncertainties in variable consideration that was constrained in prior periods. In addition, Jefferies Group recognized $4.8 million and $4.3 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $9.8 million and $8.9 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, of revenues primarily associated with distribution services, a portion of which relates to prior periods. Contract Balances The timing of revenue recognition may differ from the timing of payment by customers. We record a receivable when revenue is recognized prior to payment and it has an unconditional right to payment. Alternatively, when payment precedes the provision of the related services, we record deferred revenue until the performance obligations are satisfied. We had receivables related to revenues from contracts with customers of $289.9 million and $250.6 million at May 31, 2019 and November 30, 2018 , respectively. We had no significant impairments related to these receivables during the three and six months ended May 31, 2019 and June 30, 2018 . Jefferies Group's deferred revenue primarily relates to retainer and milestone fees received in investment banking advisory engagements where the performance obligation has not yet been satisfied. Our deferred revenue, which primarily relates to Jefferies Group, was $21.0 million and $14.2 million at May 31, 2019 and November 30, 2018 , respectively, which are recorded as Payables, expense accruals and other liabilities in the Consolidated Statements of Financial Condition. During the three months ended May 31, 2019 , we recognized $1.8 million of deferred revenue from the balance at February 28, 2019. During the three months ended June 30, 2018 , we recognized $9.6 million of deferred revenue from the balance at March 31, 2018. During the six months ended May 31, 2019 , we recognized $9.4 million of deferred revenue from the balance at November 30, 2018 . During the six months ended June 30, 2018 , we recognized $14.5 million of deferred revenue from the balance at December 31, 2017 . Contract Costs Jefferies Group capitalizes costs to fulfill contracts associated with investment banking advisory engagements where the revenue is recognized at a point in time and the costs are determined to be recoverable. Capitalized costs to fulfill a contract are recognized at the point in time that the related revenue is recognized. At May 31, 2019 and November 30, 2018 , Jefferies Group's capitalized costs to fulfill a contract were $3.7 million and $4.7 million , respectively, which are recorded in Receivables in the Consolidated Statements of Financial Condition. Jefferies Group recognized expenses of $1.8 million and $1.2 million during the three months ended May 31, 2019 and June 30, 2018 , respectively, and $3.4 million and $1.3 million , during the six months ended May 31, 2019 and June 30, 2018 , respectively, related to costs to fulfill a contract that were capitalized as of the beginning of the period. There were no significant impairment charges recognized in relation to these capitalized costs during the three and six months ended May 31, 2019 and June 30, 2018 . At May 31, 2019 and November 30, 2018

Income Taxes

Income Taxes	6 Months Ended
	May 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The aggregate amount of gross unrecognized tax benefits related to uncertain tax positions at May 31, 2019 was $260.0 million (including $61.6 million for interest), of which $189.2 million related to Jefferies Group. The aggregate amount of gross unrecognized tax benefits related to uncertain tax positions at November 30, 2018 was $251.4 million (including $54.1 million for interest), of which $174.9 million related to Jefferies Group. If recognized, such amounts would lower our effective tax rate. We recognize interest and penalties, if any, related to unrecognized tax benefits in income tax expense. No material penalties were accrued for the six months ended May 31, 2019 and June 30, 2018 . The statute of limitations with respect to our federal income tax returns has expired for all years through 2014. We are currently under examination in a number of major tax jurisdictions. Prior to becoming a wholly-owned subsidiary, Jefferies Group filed a consolidated U.S. federal income tax return with its qualifying subsidiaries and was subject to income tax in various states, municipalities and foreign jurisdictions and Jefferies Group is also currently under examination in a number of major tax jurisdictions. We do not expect that resolution of these examinations will have a significant effect on our Consolidated Statements of Financial Condition, but could have a significant impact on the Consolidated Statements of Operations for the period in which resolution occurs. The new tax on global intangible low-taxed income ("GILTI") became applicable in fiscal 2019. As a result, we made an accounting policy election in the first quarter of 2019 to treat GILTI as a period cost if and when incurred. Our benefit for income taxes for continuing operations for the six months ended May 31, 2019 was $486.5 million . As discussed above, during the second quarter of 2019, we completed the sale of our available for sale portfolio. In connection therewith, we recognized a tax benefit of $544.6 million during the three and six months ended May 31, 2019 . Unrealized gains and losses on available for sale securities, and their associated tax impacts, are recorded directly to equity as part of the Accumulated other comprehensive income (loss) balance. Following the portfolio approach, when unrealized gains and losses and their associated tax impacts are recorded at a then current tax rate, and then realized later at a different tax rate, the difference between the tax impact initially recorded in Accumulated other comprehensive income (loss) and the tax impact removed from Accumulated other comprehensive income (loss) upon realization remains in Accumulated other comprehensive income (loss) until the disposal of the portfolio and is referred to as a "lodged tax effect." Large changes in the fair value of our available for sale securities, primarily during 2008 through 2010, combined with fluctuations in our tax rate during those periods, generated a lodged tax benefit of $544.6 million . As a result of recent steps to improve our Corporate investment management efforts, we sold the remaining portion of our available for sale portfolio in the second quarter of 2019, which resulted in the realization of the $544.6 million tax benefit. While this realization did not impact total equity, it resulted in a tax benefit reflected in the Consolidated Statement of Operations of $544.6 million and, as a result, Retained earnings increased and Accumulated other comprehensive income (loss) decreased by corresponding amounts. Our provision for income taxes for the six months ended May 31, 2019 was also reduced by $6.7 million related to completing our accounting for tax reform enacted in 2017, as permitted by Staff Accounting Bulletin No. 118, which was issued by the SEC staff on December 22, 2017. Our provision for income taxes for continuing operations for the six months ended June 30, 2018 was reduced by a $43.9 million

Common Share and Earnings Per C

Common Share and Earnings Per Common Share	6 Months Ended
	May 31, 2019
Earnings Per Share [Abstract]
Common Share and Earnings Per Common Share	Common Share and Earnings Per Common Share Basic and diluted earnings per share amounts were calculated by dividing net income by the weighted average number of common shares outstanding. The numerators and denominators used to calculate basic and diluted earnings per share are as follows (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Numerator for earnings per share: Net income attributable to Jefferies Financial Group Inc. common shareholders $ 670,764 $ 725,529 $ 715,575 $ 850,054 Allocation of earnings to participating securities (1) (4,086 ) (3,870 ) (4,241 ) (3,831 ) Net income attributable to Jefferies Financial Group Inc. common shareholders for basic earnings per share 666,678 721,659 711,334 846,223 Adjustment to allocation of earnings to participating securities related to diluted shares (1) 43 37 34 29 Mandatorily redeemable convertible preferred share dividends 1,276 — 2,552 — Net income attributable to Jefferies Financial Group Inc. common shareholders for diluted earnings per share $ 667,997 $ 721,696 $ 713,920 $ 846,252 Denominator for earnings per share: Weighted average common shares outstanding 293,600 342,719 299,067 349,647 Weighted average shares of restricted stock outstanding with future service required (1,873 ) (1,868 ) (1,851 ) (1,578 ) Weighted average RSUs outstanding with no future service required 15,283 11,198 13,892 11,168 Denominator for basic earnings per share – weighted average shares 307,010 352,049 311,108 359,237 Stock options — 7 — 18 Senior executive compensation plan awards 1,355 4,019 2,466 3,430 Mandatorily redeemable convertible preferred shares 4,162 — 4,162 — Denominator for diluted earnings per share 312,527 356,075 317,736 362,685 (1) Represents dividends declared during the period on participating securities plus an allocation of undistributed earnings to participating securities. Net losses are not allocated to participating securities. Participating securities represent restricted stock and RSUs for which requisite service has not yet been rendered and amounted to weighted average shares of 1,881,600 and 1,887,100 for the three months ended May 31, 2019 and June 30, 2018 , respectively, and 1,856,400 and 1,603,500 for the six months ended May 31, 2019 and June 30, 2018 , respectively. Dividends declared on participating securities were not material during the three and six months ended May 31, 2019 and June 30, 2018 . Undistributed earnings are allocated to participating securities based upon their right to share in earnings if all earnings for the period had been distributed. For the three and six months ended June 30, 2018 , shares related to the mandatorily redeemable convertible preferred shares were not included in the computation of diluted per share amounts as the effect was antidilutive. The Board of Directors from time to time has authorized the repurchase of our common shares. In January 2019, the Board of Directors approved an additional $500.0 million share repurchase authorization. During the six months ended May 31, 2019 , we purchased a total of 17,350,000 of our common shares for an aggregate purchase price of $344.5 million under these authorizations. At May 31, 2019 , $155.5 million remained available for repurchase. Additionally, in connection with the HomeFed merger on July 1, 2019, our Board of Directors has authorized the repurchase of an additional 9.25 million shares in the open market.

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	6 Months Ended
	May 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies And Guarantees	Commitments, Contingencies and Guarantees Commitments The following table summarizes commitments associated with certain business activities at May 31, 2019 (in millions): Expected Maturity Date 2019 2020 2021 2023 2025 Maximum Payout Equity commitments (1) $ 17.4 $ 127.9 $ 1.3 $ — $ 19.1 $ 165.7 Loan commitments (1) — 252.5 55.0 5.6 — 313.1 Underwriting commitments 264.2 — — — — 264.2 Forward starting reverse repos (2) 4,410.9 — — — — 4,410.9 Forward starting repos (2) 2,635.7 — — — — 2,635.7 Other unfunded commitments (1) 118.0 — 142.8 — 4.8 265.6 $ 7,446.2 $ 380.4 $ 199.1 $ 5.6 $ 23.9 $ 8,055.2 (1) Equity commitments, loan commitments and other unfunded commitments are presented by contractual maturity date. The amounts are however mostly available on demand. (2) At May 31, 2019 , $4,401.6 million within forward starting securities purchased under agreements to resell and $2,136.0 million within forward starting securities sold under agreements to repurchase settled within three business days. Equity Commitments. Equity commitments include commitments to invest in Jefferies Group's joint venture, Jefferies Finance, and commitments to invest in private equity funds and in Jefferies Capital Partners, LLC, the manager of the private equity funds, which consists of a team led by our President and a Director. At May 31, 2019 , Jefferies Group's outstanding commitments relating to Jefferies Capital Partners, LLC and its private equity funds were $17.9 million . See Note 9 for additional information regarding Jefferies Group's investment in Jefferies Finance. Additionally, as of May 31, 2019 , we have other equity commitments to invest up to $41.4 million in various other investments. Loan Commitments. From time to time Jefferies Group makes commitments to extend credit to investment banking and other clients in loan syndication, acquisition finance and securities transactions and to SPE sponsors in connection with the funding of CLO and other asset-backed transactions. These commitments and any related drawdowns of these facilities typically have fixed maturity dates and are contingent on certain representations, warranties and contractual conditions applicable to the borrower. At May 31, 2019 , Jefferies Group had $60.6 million of outstanding loan commitments to clients. Loan commitments outstanding at May 31, 2019 also include Jefferies Group's portion of the outstanding secured revolving credit facility provided to Jefferies Finance to support loan underwritings by Jefferies Finance. At May 31, 2019 , none of Jefferies Group's $250.0 million commitment was funded. Underwriting Commitments . In connection with investment banking activities, Jefferies Group may from time to time provide underwriting commitments to its clients in connection with capital raising transactions. Forward Starting Reverse Repos and Repos. Jefferies Group enters into commitments to take possession of securities with agreements to resell on a forward starting basis and to sell securities with agreements to repurchase on a forward starting basis that are primarily secured by U.S. government and agency securities. Other Unfunded Commitments. Other unfunded commitments include obligations in the form of revolving notes, warehouse financings and debt securities to provide financing to asset-backed and CLO vehicles. Upon advancing funds, drawn amounts are collateralized by the assets of an entity. Contingencies We and our subsidiaries are parties to legal and regulatory proceedings that are considered to be either ordinary, routine litigation incidental to their business or not significant to our consolidated financial position. We and our subsidiaries are also involved, from time to time, in other exams, investigations and similar reviews (both formal and informal) by governmental and self-regulatory agencies regarding our businesses, certain of which may result in judgments, settlements, fines, penalties or other injunctions. We do not believe that any of these actions will have a significant adverse effect on our consolidated financial position or liquidity, but any amounts paid could be significant to results of operations for the period. Guarantees Derivative Contracts. Jefferies Group dealer activities cause it to make markets and trade in a variety of derivative instruments. Certain derivative contracts that Jefferies Group has entered into meet the accounting definition of a guarantee under GAAP, including credit default swaps, written foreign currency options and written equity put options. On certain of these contracts, such as written interest rate caps and foreign currency options, the maximum payout cannot be quantified since the increase in interest or foreign exchange rates are not contractually limited by the terms of the contract. As such, we have disclosed notional values as a measure of Jefferies Group's maximum potential payout under these contracts. The following table summarizes the notional amounts associated with Jefferies Group's derivative contracts meeting the definition of a guarantee under GAAP at May 31, 2019 (in millions): Expected Maturity Date Guarantee Type 2019 2020 2021 2023 2025 Notional/ Maximum Payout Derivative contracts – non-credit related $ 8,725.7 $ 2,869.3 $ 4,410.2 $ 3,263.9 $ 326.1 $ 19,595.2 Written derivative contracts – credit related — 32.9 — 64.5 — 97.4 Total derivative contracts $ 8,725.7 $ 2,902.2 $ 4,410.2 $ 3,328.4 $ 326.1 $ 19,692.6 The derivative contracts deemed to meet the definition of a guarantee under GAAP are before consideration of hedging transactions and only reflect a partial or "one-sided" component of any risk exposure. Written equity options and written credit default swaps are often executed in a strategy that is in tandem with long cash instruments (e.g., equity and debt securities). Jefferies Group substantially mitigates its exposure to market risk on these contracts through hedges, such as other derivative contracts and/or cash instruments, and Jefferies Group manages the risk associated with these contracts in the context of its overall risk management framework. Jefferies Group believes notional amounts overstate its expected payout and that fair value of these contracts is a more relevant measure of its obligations. The fair value of derivative contracts meeting the definition of a guarantee is approximately $239.3 million at May 31, 2019 . Berkadia. We have agreed to reimburse Berkshire Hathaway for up to one-half of any losses incurred under a $1.5 billion surety policy securing outstanding commercial paper issued by an affiliate of Berkadia. At May 31, 2019 , the aggregate amount of commercial paper outstanding was $1.47 billion . Other Guarantees. Jefferies Group is a member of various exchanges and clearing houses. In the normal course of business, Jefferies Group provides guarantees to securities clearing houses and exchanges. These guarantees generally are required under the standard membership agreements, such that members are required to guarantee the performance of other members. Additionally, if a member becomes unable to satisfy its obligations to the clearing house, other members would be required to meet these shortfalls. To mitigate these performance risks, the exchanges and clearing houses often require members to post collateral. Jefferies Group's obligations under such guarantees could exceed the collateral amounts posted. Jefferies Group's maximum potential liability under these arrangements cannot be quantified; however, the potential for Jefferies Group to be required to make payments under such guarantees is deemed remote. Accordingly, no liability has been recognized for these arrangements. Standby Letters of Credit. At May 31, 2019 , Jefferies Group provided guarantees to certain counterparties in the form of standby letters of credit totaling $36.9 million . Standby letters of credit commit Jefferies Group to make payment to the beneficiary if the guaranteed party fails to fulfill its obligation under a contractual arrangement with that beneficiary. Since commitments associated with these collateral instruments may expire unused, the amount shown does not necessarily reflect the actual future cash funding requirement. Other subsidiaries of ours have outstanding letters of credit aggregating $1.6 million at May 31, 2019 . Primarily all letters of credit expire within one year

Net Capital Requirements

Net Capital Requirements	6 Months Ended
	May 31, 2019
Net Capital Requirements [Abstract]
Net Capital Requirements	Net Capital Requirements Jefferies LLC operates as a broker-dealer registered with the SEC and member firms of the Financial Industry Regulatory Authority ("FINRA"). Jefferies LLC is subject to the SEC Uniform Net Capital Rule ("Rule 15c3-1"), which requires the maintenance of minimum net capital and has elected to calculate minimum capital requirements using the alternative method permitted by Rule 15c3-1 in calculating net capital. Jefferies LLC, as a dually-registered U.S. broker-dealer and futures commission merchant ("FCM"), is also subject to Rule 1.17 of the Commodity Futures Trading Commission ("CFTC"), which sets forth minimum financial requirements. The minimum net capital requirement in determining excess net capital for a dually-registered U.S. broker-dealer and FCM is equal to the greater of the requirement under Rule 15c3-1 or CFTC Rule 1.17. Jefferies LLC’s net capital and excess net capital at May 31, 2019 were $1,395.9 million and $1,290.1 million , respectively. FINRA is the designated examining authority for Jefferies Group's U.S. broker-dealer and the National Futures Association is the designated self-regulatory organization for Jefferies LLC as an FCM. Certain other U.S. and non-U.S. subsidiaries of Jefferies Group are subject to capital adequacy requirements as prescribed by the regulatory authorities in their respective jurisdictions, including Jefferies International Limited, which is authorized and regulated by the Financial Conduct Authority in the United Kingdom. The regulatory capital requirements referred to above may restrict our ability to withdraw capital from Jefferies Group's regulated subsidiaries. Some of our other consolidated subsidiaries also have credit agreements which may restrict the payment of cash dividends, or the ability to make loans or advances to the parent company.

Other Fair Value Information

Other Fair Value Information	6 Months Ended
	May 31, 2019
Other Fair Value Information [Abstract]
Other Fair Value Information	Other Fair Value Information The carrying amounts and estimated fair values of our principal financial instruments that are not recognized at fair value on a recurring basis are as follows (in thousands): May 31, 2019 November 30, 2018 Carrying Amount Fair Value Carrying Amount Fair Value Receivables: Notes and loans receivable (1) $ 737,461 $ 739,607 $ 680,015 $ 676,152 Financial Liabilities: Short-term borrowings (2) $ 510,435 $ 510,435 $ 387,492 $ 387,492 Long-term debt (3) $ 7,041,475 $ 7,169,833 $ 6,931,393 $ 6,826,503 (1) Notes and loans receivable: The fair values are estimated principally based on a discounted future cash flows model using market interest rates for similar instruments. If measured at fair value in the financial statements, these financial instruments would be classified as Level 3 in the fair value hierarchy. (2) Short-term borrowings: The fair values of short-term borrowings are estimated to be the carrying amount due to their short maturities. If measured at fair value in the financial statements, these financial instruments would be classified as Level 3 in the fair value hierarchy. (3) Long-term debt: The fair values are estimated using quoted prices, pricing information obtained from external data providers and, for certain variable rate debt, is estimated to be the carrying amount. If measured at fair value in the financial statements, these financial instruments would be classified as Level 2 and Level 3 in the fair value hierarchy.

Related Party Transactions

Related Party Transactions	6 Months Ended
	May 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Jefferies Capital Partners Related Funds. Jefferies Group has equity investments in the JCP Manager and in private equity funds, which are managed by a team led by our President and a Director ("Private Equity Related Funds"). Reflected in our Consolidated Statements of Financial Condition at May 31, 2019 and November 30, 2018 are Jefferies Group's equity investments in Private Equity Related Funds of $31.2 million and $35.5 million , respectively. Net gains (losses) aggregating $4.0 million and $3.0 million for the three months ended May 31, 2019 and June 30, 2018 , respectively, and $(0.1) million and $10.0 million for the six months ended May 31, 2019 and June 30, 2018 , respectively, were recorded in Other revenues related to the Private Equity Related Funds. For further information regarding our commitments and funded amounts to the Private Equity Related Funds, see Notes 8 and 19 . Berkadia Commercial Mortgage, LLC. At May 31, 2019 and November 30, 2018 , Jefferies Group has commitments to purchase $543.4 million and $723.8 million , respectively, in agency commercial mortgage-backed securities from Berkadia. FXCM . Jefferies Group entered into a foreign exchange prime brokerage agreement with FXCM in 2017. In connection with the foreign exchange contracts entered into under this agreement, Jefferies Group had $14.2 million and $9.9 million at May 31, 2019 and November 30, 2018 , respectively, included in Payables, expense accruals and other liabilities in our Consolidated Statements of Financial Condition. Officers, Directors and Employees. We have $46.9 million and $49.3 million of loans outstanding to certain officers and employees (none of whom are an executive officer or director of the Company) at May 31, 2019 and November 30, 2018 , respectively. Receivables from and payables to customers include balances arising from officers', directors' and employees' individual security transactions. These transactions are subject to the same regulations as all customer transactions and are provided on substantially the same terms. See Note 9 for information on transactions with Jefferies Finance.

Discontinued Operations

Discontinued Operations	6 Months Ended
	May 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On June 5, 2018, we sold 48% of National Beef to Marfrig for $907.7 million in cash, reducing our ownership in National Beef to 31% . Marfrig also acquired an additional 3% of National Beef from other equity owners and owns 51% of National Beef. Jefferies will continue to designate two board members and have a series of other rights in respect of our continuing equity interest, with a lockup period of five years and thereafter fair market value liquidity protections. As of the closing of the sale on June 5, 2018, we deconsolidated our investment in National Beef and account for our remaining interest under the equity method of accounting. The sale of National Beef meets the GAAP criteria to be classified as a discontinued operation as the sale represents a strategic shift that has a major effect in our operations and financial results. As such, we classified the results of National Beef prior to June 5, 2018 as a discontinued operation and reported those results in Income from discontinued operations, net of income tax provision in the Consolidated Statements of Operations. A summary of the results of discontinued operations for National Beef for the three and six months ended June 30, 2018 through the June 5, 2018 transaction with Marfrig is as follows (in thousands): For the Three Months Ended June 30, 2018 For the Six Months Ended June 30, 2018 Revenues: Beef processing services $ 1,355,691 $ 3,137,611 Interest income 63 131 Other 959 4,329 Total revenues 1,356,713 3,142,071 Expenses: Compensation and benefits 7,207 17,414 Cost of sales 1,214,207 2,884,983 Interest expense 2,207 4,316 Depreciation and amortization 18,440 43,959 Selling, general and other expenses 6,435 14,291 Total expenses 1,248,496 2,964,963 Income from discontinued operations before income taxes 108,217 177,108 Income tax provision 31,111 47,045 Income from discontinued operations, net of income tax provision $ 77,106 $ 130,063 Net income attributable to the redeemable noncontrolling interests in the Consolidated Statements of Operations includes $22.7 million and $37.1 million related to National Beef's noncontrolling interests for the three and six months ended June 30, 2018 , respectively. Pre-tax income from discontinued operations attributable to Jefferies Financial Group Inc. common shareholders was $85.5 million and $140.0 million for the three and six months ended June 30, 2018 , respectively. As discussed above, we account for our retained 31% ownership of National Beef subsequent to the sale to Marfrig under the equity method. During the three and six months ended May 31, 2019 , we recorded $34.9 million and $62.1 million , respectively, in Income related to associated companies from our 31% ownership in National Beef and we received distributions from National Beef of $54.9 million during the six months ended May 31, 2019 . The pre-tax income of 100% of National Beef during the three and six months ended May 31, 2019 was $119.3 million and $213.8 million , respectively. From June 5, 2018 through June 30, 2018, we recorded $24.4 million in Income related to associated companies from our 31% ownership in National Beef and we received distributions from National Beef of $13.1 million . The pre-tax income of 100% National Beef from June 5, 2018 through June 30, 2018 was $80.4 million . During the three and six months ended June 30, 2018 , we have also recorded a pre-tax gain on the National Beef transaction of $873.5 million ( $643.9 million after-tax) which is reported in Gain on disposal of discontinued operations, net of income tax provision in the Consolidated Statements of Operations. Included in the $873.5 million pre-tax gain on the sale of National Beef is approximately $352.4 million related to the remeasurement of our retained 31% interest in National Beef to fair value.

Segment Information

Segment Information	6 Months Ended
	May 31, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information We are a diversified financial services company engaged in investment banking and capital markets, asset management and direct investing. In 2018, we made a number of strategic changes including the sale of 48% of National Beef and 100% of our interest in Garcadia. During the fourth quarter of 2018, we transferred to Jefferies Group our 50% interest in Berkadia and our LAM seed investments, thereby amalgamating our primary financial services operating businesses into one platform. Culminating with the fourth quarter reorganization, we began managing our business across three reportable operating segments consisting of Jefferies Group, Merchant Banking and Corporate. In connection with this change, we have reclassified the prior periods to conform to our current presentation. Jefferies Group is the largest independent U.S. headquartered global full-service integrated investment banking and securities firm. Merchant Banking consists of our various merchant banking businesses and investments, primarily including National Beef, Spectrum Brands, Linkem, Vitesse Energy Finance and JETX Energy, WeWork, HomeFed, Idaho Timber and FXCM. Our Merchant Banking businesses and investments also include Berkadia and our LAM seed investments, prior to their transfer to Jefferies Group in the fourth quarter of 2018, and Garcadia, prior to its sale in August 2018. Corporate assets primarily consist of financial instruments owned, the deferred tax asset (exclusive of Jefferies Group's deferred tax asset), cash and cash equivalents. Corporate revenues primarily include interest income. We do not allocate Corporate revenues or overhead expenses to the operating units. As discussed further in Note 23, on June 5, 2018, we sold 48% of National Beef to Marfrig and deconsolidated our investment in National Beef. Results prior to June 5, 2018 are classified in discontinued operations and are not included in the table below. Our retained 31% interest in National Beef is accounted for under the equity method, and results subsequent to the June 5, 2018 closing are included in Merchant Banking in the table below. Certain information concerning our segments is presented in the following table. Consolidated subsidiaries are reflected as of the date a majority controlling interest was acquired. As discussed above, Jefferies Group is reflected in our consolidated financial statements utilizing a one month lag for the three and six months ended June 30, 2018 . For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 (In thousands) Net revenues: Reportable Segments: Jefferies Group (1) $ 901,851 $ 822,557 $ 1,587,569 $ 1,643,803 Merchant Banking (1) 187,324 86,417 323,662 160,318 Corporate 8,974 2,994 13,167 6,061 Total net revenues related to reportable segments 1,098,149 911,968 1,924,398 1,810,182 Consolidation adjustments 3,508 (809 ) 5,702 (3,588 ) Total consolidated net revenues $ 1,101,657 $ 911,159 $ 1,930,100 $ 1,806,594 Income (loss) from continuing operations before income taxes: Reportable Segments: Jefferies Group (1) $ 155,138 $ 121,865 $ 217,723 $ 244,603 Merchant Banking (1) 51,224 (50,058 ) 71,329 (99,315 ) Corporate (13,885 ) (21,215 ) (35,228 ) (42,740 ) Income from continuing operations before income taxes related to reportable segments 192,477 50,592 253,824 102,548 Parent Company interest (14,766 ) (14,750 ) (29,528 ) (29,496 ) Consolidation adjustments 5,768 1,673 8,500 2,226 Total consolidated income from continuing operations before income taxes $ 183,479 $ 37,515 $ 232,796 $ 75,278 Depreciation and amortization expenses: Reportable Segments: Jefferies Group (1) $ 18,968 $ 17,288 $ 36,630 $ 33,654 Merchant Banking (1) 16,951 13,740 32,368 24,664 Corporate 867 877 1,722 1,747 Total consolidated depreciation and amortization expenses $ 36,786 $ 31,905 $ 70,720 $ 60,065 (1) Amounts related to LAM and Berkadia are included in Merchant Banking prior to their transfer to Jefferies Group in the fourth quarter of 2018. For the three and six months ended June 30, 2018 , net revenues related to the net assets transferred were $15.8 million and $(20.8) million , respectively, and income from continuing operations before income taxes related to the net assets transferred was $29.8 million and $9.1 million , respectively. Interest expense classified as a component of Net revenues relates to Jefferies Group. For the three months ended May 31, 2019 and June 30, 2018 , interest expense classified as a component of Expenses was primarily comprised of parent company interest ( $14.8 million and $14.8 million , respectively) and Merchant Banking ( $8.4 million and $9.5 million , respectively). For the six months ended May 31, 2019 and June 30, 2018 , interest expense classified as a component of Expenses was primarily comprised of parent company interest ( $29.5 million and $29.5 million , respectively) and Merchant Banking ( $16.6 million and $16.3 million

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policy)	6 Months Ended
	May 31, 2019
Accounting Policies [Abstract]
Accounting Developments - Accounting Standards to be Adopted in Future Periods	Accounting Developments - Accounting Standards to be Adopted in Future Periods Leases. In February 2016, the Financial Accounting Standards Board ("FASB") issued new guidance that affects the accounting and disclosure requirements for leases. The FASB requires the recognition of all leases that are longer than one year onto the balance sheet, which will result in the recognition of a right of use asset and a corresponding lease liability. The right of use asset and lease liability will be measured initially using the present value of the remaining rental payments. A significant portion of the population of contracts that will be subject to recognition on our Consolidated Statements of Financial Condition have been identified; however, their initial measurement still remains under evaluation. We are currently modifying certain of our lease accounting systems to enable us to comply with the accounting requirements of this guidance. In July 2018, the FASB issued additional guidance on leases which allows an entity to recognize a cumulative-effect adjustment to the opening balance of retained earnings upon adoption. The guidance is effective for annual and interim periods beginning after December 15, 2018. We plan on adopting the lease standard in the first quarter of fiscal 2020 with a cumulative-effect adjustment to opening retained earnings in the period of adoption. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Financial Instruments - Credit Losses. In June 2016, the FASB issued new guidance for estimating credit losses on certain types of financial instruments by introducing an approach based on expected losses. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Goodwill. In January 2017, the FASB issued new guidance for simplifying goodwill impairment testing. The guidance is effective in the first quarter of fiscal 2021. We do not believe the new guidance will have a material impact on our consolidated financial statements. Derivatives and Hedging. In August 2017, the FASB issued new guidance to improve the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements. The guidance is effective in the first quarter of fiscal 2020. We do not believe the new guidance will have a material impact on our consolidated financial statements. Defined Benefit Plans. In August 2018, the FASB issued new guidance to improve the effectiveness of disclosure requirements on defined benefit pension plans and other post-retirement plans. The guidance is effective in the first quarter of fiscal 2021. We do not believe the new guidance will have a material impact on our consolidated financial statements. Internal-Use Software. In August 2018, the FASB issued new guidance which amends the definition of a hosting arrangement and requires that the customer in a hosting arrangement that is a service contract capitalize certain implementation costs as if the arrangement was an internal-use software project. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements. Consolidation. In October 2018, the FASB issued new guidance which requires indirect interests held through related parties under common control arrangements be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests. The guidance is effective in the first quarter of fiscal 2021. We are currently evaluating the impact of the new guidance on our consolidated financial statements.
Revenue Recognition Policies	Revenue from contracts with customers is recognized when, or as, we satisfy our performance obligations by transferring the promised goods or services to the customers. A good or service is transferred to a customer when, or as, the customer obtains control of that good or service. A performance obligation may be satisfied over time or at a point in time. Revenue from a performance obligation satisfied over time is recognized by measuring our progress in satisfying the performance obligation in a manner that depicts the transfer of the goods or services to the customer. Revenue from a performance obligation satisfied at a point in time is recognized at the point in time that we determine the customer obtains control over the promised good or service. The amount of revenue recognized reflects the consideration we expect to be entitled to in exchange for those promised goods or services (the "transaction price"). In determining the transaction price, we consider multiple factors, including the effects of variable consideration. Variable consideration is included in the transaction price only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainties with respect to the amount are resolved. In determining when to include variable consideration in the transaction price, we consider the range of possible outcomes, the predictive value of our past experiences, the time period of when uncertainties expect to be resolved and the amount of consideration that is susceptible to factors outside of our influence, such as market volatility or the judgment and actions of third parties. The following provides detailed information on the recognition of our revenues from contracts with customers: Commissions and Other Fees. Jefferies Group earns commission revenues by executing, settling and clearing transactions for clients primarily in equity, equity-related and futures products. Trade execution and clearing services, when provided together, represent a single performance obligation as the services are not separately identifiable in the context of the contract. Commission revenues associated with combined trade execution and clearing services, as well as trade execution services on a standalone basis, are recognized at a point in time on trade-date. Commission revenues are generally paid on settlement date and Jefferies Group records a receivable between trade-date and payment on settlement date. Jefferies Group permits institutional customers to allocate a portion of their gross commissions to pay for research products and other services provided by third parties. The amounts allocated for those purposes are commonly referred to as soft dollar arrangements. Jefferies Group acts as an agent in the soft dollar arrangements as the customer controls the use of the soft dollars and directs Jefferies Group's payments to third-party service providers on its behalf. Accordingly, amounts allocated to soft dollar arrangements are netted against commission revenues in our Consolidated Statements of Operations. Jefferies Group earns account advisory and distribution fees in connection with wealth management services. Account advisory fees are recognized over time using the time-elapsed method as Jefferies Group determined that the customer simultaneously receives and consumes the benefits of investment advisory services as they are provided. Account advisory fees may be paid in advance of a specified service period or in arrears at the end of the specified service period (e.g., quarterly). Account advisory fees paid in advance are initially deferred within Payables, expense accruals and other liabilities in the Consolidated Statements of Financial Condition. Distribution fees are variable and recognized when the uncertainties with respect to the amounts are resolved. Investment Banking. Jefferies Group provides its clients with a full range of capital markets and financial advisory services. Capital markets services include underwriting and placement agent services in both the equity and debt capital markets, including private equity placements, initial public offerings, follow-on offerings and equity-linked convertible securities transactions and structuring, underwriting and distributing public and private debt, including investment grade debt, high yield bonds, leveraged loans, municipal bonds and mortgage- and asset-backed securities. Underwriting and placement agent revenues are recognized at a point in time on trade-date, as the client obtains the control and benefit of the capital markets offering at that point. Costs associated with capital markets transactions are deferred until the related revenue is recognized or the engagement is otherwise concluded, and are recorded on a gross basis within Selling, general and other expenses in the Consolidated Statements of Operations as Jefferies Group is acting as a principal in the arrangement. Any expenses reimbursed by its clients are recognized as Investment banking revenues. Revenues from financial advisory services primarily consist of fees generated in connection with merger, acquisition and restructuring transactions. Advisory fees from mergers and acquisitions engagements are recognized at a point in time when the related transaction is completed, as the performance obligation is to successfully broker a specific transaction. Fees received prior to the completion of the transaction are deferred within Payables, expense accruals and other liabilities in the Consolidated Statements of Financial Condition. Advisory fees from restructuring engagements are recognized over time using a time elapsed measure of progress as Jefferies Group's clients simultaneously receive and consume the benefits of those services as they are provided. A significant portion of the fees Jefferies Group receives for its advisory services are considered variable as they are contingent upon a future event (e.g., completion of a transaction or third-party emergence from bankruptcy) and are excluded from the transaction price until the uncertainty associated with the variable consideration is subsequently resolved, which is expected to occur upon achievement of the specified milestone. Payment for advisory services are generally due promptly upon completion of a specified milestone or, for retainer fees, periodically over the course of the engagement. Jefferies Group recognizes a receivable between the date of completion of the milestone and payment by the customer. Expenses associated with investment banking advisory engagements are deferred only to the extent they are explicitly reimbursable by the client and the related revenue is recognized at a point in time. All other investment banking advisory related expenses, including expenses incurred related to restructuring assignments, are expensed as incurred. All investment banking advisory expenses are recognized within their respective expense category in the Consolidated Statements of Operations and any expenses reimbursed by Jefferies Group's clients are recognized as Investment banking revenues. Asset Management Fees. Jefferies Group earns management and performance fees, recorded in Other revenues, in connection with investment advisory services provided to various funds and accounts, which are satisfied over time and measured using a time elapsed measure of progress as the customer receives the benefits of the services evenly throughout the term of the contract. Management and performance fees are considered variable as they are subject to fluctuation (e.g., changes in assets under management, market performance) and/ or are contingent on a future event during the measurement period (e.g., meeting a specified benchmark) and are recognized only to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty is resolved. Management fees are generally based on month-end assets under management or an agreed upon notional amount and are included in the transaction price at the end of each month when the assets under management or notional amount is known. Performance fees are received when the return on assets under management for a specified performance period exceed certain benchmark returns, "high-water marks" or other performance targets. The performance period related to performance fees is annual or semi-annual. Accordingly, performance fee revenue will generally be recognized only at the end of the performance period to the extent that the benchmark return has been met. Manufacturing Revenues. Idaho Timber's primary business consists of the sale of lumber that is manufactured or remanufactured at one of its locations. Agreements with customers for these sales specify the type, quantity and price of products to be delivered as well as the delivery date and payment terms. The transaction price is fixed at the time of sale and revenue is generally recognized when the customer takes control of the product.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	6 Months Ended
	May 31, 2019
Accounting Policies [Abstract]
Supplemental cash flow information	Supplemental Cash Flow Information For the Six Months Ended May 31, June 30, 2018 (In thousands) Cash paid during the year for: Interest $ 808,740 $ 654,370 Income tax payments (refunds), net $ 21,410 $ 15,804

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	6 Months Ended
	May 31, 2019
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Measured On Recurring Basis At Fair Value	The following is a summary of our financial instruments, securities purchased under agreements to resell, trading liabilities and long-term debt that are accounted for at fair value on a recurring basis, excluding Investments at fair value based on net asset value ("NAV") (within trading assets) of $646.4 million and $394.4 million at May 31, 2019 and November 30, 2018 , respectively, by level within the fair value hierarchy (in thousands): May 31, 2019 Level 1 Level 2 Level 3 Counterparty and Cash Collateral Netting (1) Total Assets: Trading assets, at fair value: Corporate equity securities $ 2,701,693 $ 132,121 $ 59,572 $ — $ 2,893,386 Corporate debt securities — 2,978,062 8,346 — 2,986,408 Collateralized debt obligations and collateralized loan obligations — 123,840 25,912 — 149,752 U.S. government and federal agency securities 1,505,882 114,761 — — 1,620,643 Municipal securities — 980,138 — — 980,138 Sovereign obligations 1,866,301 1,020,111 — — 2,886,412 Residential mortgage-backed securities — 1,159,961 17,266 — 1,177,227 Commercial mortgage-backed securities — 404,897 12,530 — 417,427 Other asset-backed securities — 267,565 43,185 — 310,750 Loans and other receivables — 2,105,642 98,484 — 2,204,126 Derivatives 16,348 2,529,500 8,414 (2,197,763 ) 356,499 Investments at fair value — 84,058 408,739 — 492,797 FXCM term loan — — 56,600 — 56,600 Total trading assets, excluding investments at fair value based on NAV $ 6,090,224 $ 11,900,656 $ 739,048 $ (2,197,763 ) $ 16,532,165 Securities purchased under agreements to resell $ — $ — $ 25,000 $ — $ 25,000 Liabilities: Trading liabilities: Corporate equity securities $ 2,664,846 $ 4,820 $ 221 $ — $ 2,669,887 Corporate debt securities — 1,919,466 669 — 1,920,135 U.S. government and federal agency securities 1,236,461 — — — 1,236,461 Sovereign obligations 1,328,132 870,039 — — 2,198,171 Commercial mortgage-backed securities — 724 — — 724 Loans — 1,524,341 9,428 — 1,533,769 Derivatives 24,578 2,843,810 55,863 (2,370,008 ) 554,243 Total trading liabilities $ 5,254,017 $ 7,163,200 $ 66,181 $ (2,370,008 ) $ 10,113,390 Long-term debt $ — $ 582,947 $ 236,562 $ — $ 819,509 November 30, 2018 Level 1 Level 2 Level 3 Counterparty and Cash Collateral Netting (1) Total Assets: Trading assets, at fair value: Corporate equity securities $ 2,497,045 $ 118,681 $ 52,192 $ — $ 2,667,918 Corporate debt securities — 2,683,180 9,484 — 2,692,664 Collateralized debt obligations and collateralized loan obligations — 72,949 36,105 — 109,054 U.S. government and federal agency securities 1,789,614 56,592 — — 1,846,206 Municipal securities — 894,253 — — 894,253 Sovereign obligations 1,769,556 1,043,409 — — 2,812,965 Residential mortgage-backed securities — 2,163,629 19,603 — 2,183,232 Commercial mortgage-backed securities — 819,406 10,886 — 830,292 Other asset-backed securities — 239,381 53,175 — 292,556 Loans and other receivables — 2,056,593 46,985 — 2,103,578 Derivatives 34,841 2,539,943 5,922 (2,413,931 ) 166,775 Investments at fair value — — 396,254 — 396,254 FXCM term loan — — 73,150 — 73,150 Total trading assets, excluding investments at fair value based on NAV $ 6,091,056 $ 12,688,016 $ 703,756 $ (2,413,931 ) $ 17,068,897 Available for sale securities: U.S. government securities $ 1,072,856 $ — $ — $ — $ 1,072,856 Residential mortgage-backed securities — 210,518 — — 210,518 Commercial mortgage-backed securities — 15,642 — — 15,642 Other asset-backed securities — 110,870 — — 110,870 Total available for sale securities $ 1,072,856 $ 337,030 $ — $ — $ 1,409,886 Liabilities: Trading liabilities: Corporate equity securities $ 1,685,071 $ 1,444 $ — $ — $ 1,686,515 Corporate debt securities — 1,505,618 522 — 1,506,140 U.S. government and federal agency securities 1,384,295 — — — 1,384,295 Sovereign obligations 1,735,242 661,095 — — 2,396,337 Loans — 1,371,630 6,376 — 1,378,006 Derivatives 26,473 3,586,694 27,536 (2,513,050 ) 1,127,653 Total trading liabilities $ 4,831,081 $ 7,126,481 $ 34,434 $ (2,513,050 ) $ 9,478,946 Long-term debt $ — $ 485,425 $ 200,745 $ — $ 686,170 (1) Represents counterparty and cash collateral netting across the levels of the fair value hierarchy for positions with the same counterparty.
Investments Measured At Fair Value Based On Net Asset Value	The following tables present information about our investments in entities that have the characteristics of an investment company (in thousands): Fair Value (1) Unfunded Commitments May 31, 2019 Equity Long/Short Hedge Funds (2) $ 361,046 $ — Equity Funds (3) 35,863 19,679 Commodity Funds (4) 15,672 — Multi-asset Funds (5) 233,512 — Other funds (6) 326 — Total $ 646,419 $ 19,679 November 30, 2018 Equity Long/Short Hedge Funds (2) $ 86,788 $ — Equity Funds (3) 40,070 20,996 Commodity Funds (4) 10,129 — Multi-asset Funds (5) 256,972 — Other funds (6) 400 — Total $ 394,359 $ 20,996 (1) Where fair value is calculated based on NAV, fair value has been derived from each of the funds' capital statements. (2) This category includes investments in hedge funds that invest, long and short, primarily in equity securities in domestic and international markets in both the public and private sectors. At May 31, 2019 and November 30, 2018 , approximately 73% and 0% , respectively, of the fair value of investments in this category cannot be redeemed because these investments include restrictions that do not allow for redemption in the first 36 months after acquisition. At the end of this restriction period, which is in approximately 31 months at May 31, 2019 , these investments are redeemable monthly with 45 to 90 days prior written notice. At May 31, 2019 and November 30, 2018 , 22% and 82% , respectively, of these investments are redeemable in 2020. At May 31, 2019 and November 30, 2018 , 5% and 17% , respectively, of these investments are redeemable quarterly with 60 days prior written notice. (3) The investments in this category include investments in equity funds that invest in the equity of various U.S. and foreign private companies in the energy, technology, internet service and telecommunication service industries. These investments cannot be redeemed; instead distributions are received through the liquidation of the underlying assets of the funds, which are expected to be liquidated in approximately one to ten years . (4) This category includes investments in a hedge fund that invests, long and short, primarily in commodities. Investments in this category are redeemable quarterly with 60 days prior written notice. (5) This category includes investments in hedge funds that invest, long and short, primarily in multi-asset securities in domestic and international markets in both the public and private sectors. At May 31, 2019 and November 30, 2018 , investments representing approximately 5% and 15% , respectively, of the fair value of investments in this category are redeemable monthly with 30 days prior written notice. (6) This category includes investments in a fund that invests in loans secured by a first trust deed on property, domestic and international public high yield debt, private high yield investments, senior bank loans, public leveraged equities, distressed debt and private equity investments and there are no redemption provisions. This category also includes investments in a fund of funds that invests in various private equity funds that are managed by Jefferies Group and have no redemption provisions. Investments in the fund of funds are gradually being liquidated, however, the timing of when the proceeds will be received is uncertain.
Summary Of Changes In Fair Value Of Financial Assets And Liabilities Classified As Level 3	The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the six months ended June 30, 2018 (in thousands): Six Months Ended June 30, 2018 Balance, December 31, 2017 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, June 30, 2018 Changes in unrealized gains/ losses relating to instruments still held at June 30, 2018 (1) Assets: Trading assets: Corporate equity securities $ 22,270 $ 15,052 $ 5,383 $ (520 ) $ (1,779 ) $ — $ 4,465 $ 44,871 $ 14,419 Corporate debt securities 26,036 434 19,304 (15,704 ) (2,049 ) — 45 28,066 (1,048 ) CDOs and CLOs 42,184 (3,227 ) 568 (2,374 ) (3,765 ) — 9,131 42,517 (5,641 ) Residential mortgage-backed securities 26,077 (4,193 ) 112 (10,959 ) (88 ) — (7,294 ) 3,655 419 Commercial mortgage-backed securities 12,419 (2,292 ) 1,208 (487 ) (3,209 ) — 19,600 27,239 (3,176 ) Other asset-backed securities 61,129 (5,476 ) 132,291 (124,787 ) (7,622 ) — — 55,535 (2,498 ) Loans and other receivables 47,304 (201 ) 46,682 (25,456 ) (11,648 ) — 7,355 64,036 (1,756 ) Investments at fair value 329,944 1,483 3,740 (17,570 ) — — 946 318,543 889 FXCM term loan 72,800 15,085 — — (11,785 ) — — 76,100 7,839 Liabilities: Trading liabilities: Corporate equity securities $ 48 $ 39 $ — $ — $ — $ — $ — $ 87 $ (39 ) Corporate debt securities 522 — — — — — — 522 — Commercial mortgage-backed securities 105 (105 ) — — — — — — — Loans 3,486 1,226 (5,100 ) 12,092 — — 1,177 12,881 106 Net derivatives (2) 6,746 (668 ) (6 ) — (494 ) 296 — 5,874 535 Long-term debt — (28,082 ) — — — 81,284 107,424 160,626 20,082 (1) Realized and unrealized gains (losses) are reported in Principal transactions revenues in the Consolidated Statements of Operations. (2) Net derivatives represent Trading assets - Derivatives and Trading liabilities - Derivatives. The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the three months ended May 31, 2019 (in thousands): Three Months Ended May 31, 2019 Balance, February 28, 2019 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, May 31, 2019 Changes in unrealized gains/losses included in earnings relating to instruments still held at May 31, 2019 (1) Assets: Trading assets: Corporate equity securities $ 55,576 $ 1,808 $ 221 $ (179 ) $ (551 ) $ — $ 2,697 $ 59,572 $ 1,909 Corporate debt securities 10,930 (306 ) 816 — (325 ) — (2,769 ) 8,346 (307 ) CDOs and CLOs 43,144 (1,663 ) — — (991 ) — (14,578 ) 25,912 (2,656 ) Residential mortgage-backed securities 20,963 (802 ) — — (18 ) — (2,877 ) 17,266 (759 ) Commercial mortgage-backed securities 12,820 (357 ) — (331 ) (3,238 ) — 3,636 12,530 (1,292 ) Other asset-backed securities 35,886 3,070 16,531 (8,868 ) (8,549 ) — 5,115 43,185 3,563 Loans and other receivables 78,051 (2,753 ) 38,780 (13,898 ) (2,438 ) — 742 98,484 (1,277 ) Investments at fair value 421,098 35,594 10,169 (18,302 ) — — (39,820 ) 408,739 35,594 FXCM term loan 73,600 (11,412 ) 1,500 — (7,088 ) — — 56,600 (11,412 ) Securities purchased under agreements to resell — — — — — 25,000 — 25,000 — Liabilities: Trading liabilities: Corporate equity securities $ 78 $ (74 ) $ (1,520 ) $ 1,737 $ — $ — $ — $ 221 $ — Corporate debt securities 730 (148 ) (7 ) 1 22 — 71 669 90 Commercial mortgage-backed securities 70 (70 ) — — — — — — — Loans 3,420 (191 ) (1,678 ) 1,537 — — 6,340 9,428 364 Net derivatives (2) 28,975 (14,760 ) (25 ) 4,175 1,974 — 27,110 47,449 7,565 Long-term debt (1) 283,139 1,163 — — (5,585 ) 39,385 (81,540 ) 236,562 (813 ) (1) Realized and unrealized gains (losses) are primarily reported in Principal transactions revenues in the Consolidated Statements of Operations. Changes in instrument-specific credit risk related to structured notes are included in our Consolidated Statements of Comprehensive Income (Loss), net of tax. Changes in unrealized gains (losses) included in other comprehensive income (loss) for instruments still held at May 31, 2019 were losses of $0.4 million . (2) Net derivatives represent Trading assets - Derivatives and Trading liabilities - Derivatives. The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the six months ended May 31, 2019 (in thousands): Six Months Ended May 31, 2019 Balance, November 30, 2018 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, May 31, 2019 Changes in unrealized gains/losses included in earnings relating to instruments still held at May 31, 2019 (1) Assets: Trading assets: Corporate equity securities $ 52,192 $ 5,239 $ 785 $ (2,031 ) $ (720 ) $ — $ 4,107 $ 59,572 $ 7,085 Corporate debt securities 9,484 (108 ) 2,181 (2,130 ) (1,177 ) — 96 8,346 (53 ) CDOs and CLOs 36,105 (1,233 ) 4,782 — (2,130 ) — (11,612 ) 25,912 (3,127 ) Residential mortgage-backed securities 19,603 (316 ) 39 — (45 ) — (2,015 ) 17,266 (271 ) Commercial mortgage-backed securities 10,886 (180 ) 11 (331 ) (3,278 ) — 5,422 12,530 (1,183 ) Other asset-backed securities 53,175 (1,014 ) 25,316 (13,247 ) (9,529 ) — (11,516 ) 43,185 (522 ) Loans and other receivables 46,985 2,434 77,004 (33,549 ) (3,378 ) — 8,988 98,484 844 Investments at fair value 396,254 29,454 41,512 (18,302 ) — — (40,179 ) 408,739 29,454 FXCM term loan 73,150 (10,962 ) 1,500 — (7,088 ) — — 56,600 (10,962 ) Securities purchased under agreements to resell — — — — — 25,000 — 25,000 — Liabilities: Trading liabilities: Corporate equity securities $ — $ (76 ) $ (1,546 ) $ 1,843 $ — $ — $ — $ 221 $ — Corporate debt securities 522 (382 ) (73 ) 93 22 — 487 669 305 Loans 6,376 (401 ) (3,946 ) 7,963 — — (564 ) 9,428 579 Net derivatives (2) 21,614 (29,079 ) (2,829 ) 7,259 2,031 — 48,453 47,449 19,607 Long-term debt (1) 200,745 (12,854 ) — — (11,250 ) 101,872 (41,951 ) 236,562 3,827 (1) Realized and unrealized gains (losses) are primarily reported in Principal transactions revenues in the Consolidated Statements of Operations. Changes in instrument-specific credit risk related to structured notes are included in our Consolidated Statements of Comprehensive Income (Loss), net of tax. Changes in unrealized gains (losses) included in other comprehensive income (loss) for instruments still held at May 31, 2019 were gains of $9.0 million . (2) Net derivatives represent Trading assets - Derivatives and Trading liabilities - Derivatives. The following is a summary of changes in fair value of our financial assets and liabilities that have been categorized within Level 3 of the fair value hierarchy for the three months ended June 30, 2018 (in thousands): Three Months Ended June 30, 2018 Balance, March 31, 2018 Total gains/ losses (realized and unrealized) (1) Purchases Sales Settlements Issuances Net transfers into (out of) Level 3 Balance, June 30, 2018 Changes in unrealized gains/ losses relating to instruments still held at June 30, 2018 (1) Assets: Trading assets: Corporate equity securities $ 35,753 $ 2,951 $ 1,485 $ (75 ) $ (110 ) $ — $ 4,867 $ 44,871 $ 3,241 Corporate debt securities 26,103 923 17,058 (13,481 ) — — (2,537 ) 28,066 543 CDOs and CLOs 38,613 (2,616 ) 251 (1,905 ) (431 ) — 8,605 42,517 (2,688 ) Residential mortgage-backed securities 21,762 (5,416 ) 112 (13,113 ) (35 ) — 345 3,655 423 Commercial mortgage-backed securities 15,103 (2,213 ) — — (1,924 ) — 16,273 27,239 (2,706 ) Other asset-backed securities 51,288 (4,001 ) 59,057 (62,905 ) (3,846 ) — 15,942 55,535 (2,670 ) Loans and other receivables 62,043 (6,051 ) 19,029 (16,237 ) (1,940 ) — 7,192 64,036 (5,185 ) Investments at fair value 318,159 (807 ) 3,501 (2,310 ) — — — 318,543 (807 ) FXCM term loan 73,200 6,488 — — (3,588 ) — — 76,100 2,900 Liabilities: Trading liabilities: Corporate equity securities $ 61 $ 26 $ — $ — $ — $ — $ — $ 87 $ (26 ) Corporate debt securities 522 — — — — — — 522 — Commercial mortgage-backed securities 35 (35 ) — — — — — — — Loans 10,323 (3,416 ) (10,543 ) 8,685 (29 ) — 7,861 12,881 3,231 Net derivatives (2) 6,882 (1,580 ) — — 569 — 3 5,874 (115 ) Long-term debt — (20,838 ) — — — 23,362 158,102 160,626 20,838 (1) Realized and unrealized gains (losses) are reported in Principal transactions revenues in the Consolidated Statements of Operations. (2) Net derivatives represent Trading assets - Derivatives and Trading liabilities - Derivatives.
Quantitative Information About Significant Unobservable Inputs Used In Level 3 Fair Value Measurements	The tables below present information on the valuation techniques, significant unobservable inputs and their ranges for our financial assets and liabilities, subject to threshold levels related to the market value of the positions held, measured at fair value on a recurring basis with a significant Level 3 balance. The range of unobservable inputs could differ significantly across different firms given the range of products across different firms in the financial services sector. The inputs are not representative of the inputs that could have been used in the valuation of any one financial instrument (i.e., the input used for valuing one financial instrument within a particular class of financial instruments may not be appropriate for valuing other financial instruments within that given class). Additionally, the ranges of inputs presented below should not be construed to represent uncertainty regarding the fair values of our financial instruments; rather, the range of inputs is reflective of the differences in the underlying characteristics of the financial instruments in each category. For certain categories, we have provided a weighted average of the inputs allocated based on the fair values of the financial instruments comprising the category. We do not believe that the range or weighted average of the inputs is indicative of the reasonableness of uncertainty of our Level 3 fair values. The range and weighted average are driven by the individual financial instruments within each category and their relative distribution in the population. The disclosed inputs when compared with the inputs as disclosed in other periods should not be expected to necessarily be indicative of changes in our estimates of unobservable inputs for a particular financial instrument as the population of financial instruments comprising the category will vary from period to period based on purchases and sales of financial instruments during the period as well as transfers into and out of Level 3 each period. May 31, 2019 Financial Instruments Owned Fair Value (in thousands) Valuation Technique Significant Unobservable Input(s) Input/Range Weighted Average Corporate equity securities $ 53,000 Non-exchange-traded securities Market approach Price $3 to $85 $55 Underlying stock price $3 to $13 $10 Corporate debt securities $ 8,346 Market approach Discount rate/yield 32% — Estimated recovery percentage 49% — Price $8 to $88 $57 CDOs and CLOs $ 25,912 Discounted cash flows Constant prepayment rate 10% to 20% 16 % Constant default rate 1% to 2% 2 % Loss severity 25% to 30% 27 % Discount rate/yield 11% to 17% 13 % Scenario analysis Estimated recovery percentage 2% to 38% 26 % Residential mortgage-backed securities $ 17,266 Discounted cash flows Cumulative loss rate 2% — Duration (years) 7 years — Discount rate/yield 3% — Commercial mortgage-backed securities $ 12,530 Discounted cash flows Cumulative loss rate 8% to 86% 32 % Duration (years) 0 years to 1 year 1 year Discount rate/yield 3% to 28% 19 % Scenario analysis Estimated recovery percentage 12% to 83% 47 % Price $39 to $60 $50 Other asset-backed securities $ 43,185 Discounted cash flows Cumulative loss rate 11% to 31% 20 % Duration (years) 1 year to 2 years 1 year Discount rate/yield 5% to 12% 12 % Market approach Price $100 — Loans and other receivables $ 98,484 Market approach Estimated recovery percentage 1% — Price $50 to $101 $91 Comparable price $33 — Scenario analysis Estimated recovery percentage 13% to 117% 105 % Derivatives $ 8,414 Interest rate swaps Market approach Basis points upfront 0 to 12 5 Investments at fair value $ 341,690 Private equity securities Market approach Price $169 to $250 $229 Scenario analysis Discount rate 20% — Revenue growth 0% — Contingent claims analysis Volatility 25% to 35% 30 % Duration (years) 0.5 years — Investment in FXCM $ 56,600 Term loan Discounted cash flows Term based on the pay off (years) 0 months to 1.7 years 1.7 years Securities purchased under agreements to resell $ 25,000 Market approach Spread to 6 month LIBOR 500 — Duration (years) 2 years — Trading Liabilities Loans $ 9,428 Market approach Price $50 to $80 $66 Derivatives $ 55,863 Equity options Volatility benchmarking Volatility 3% to 63% 46 % Interest rate swaps Market approach Basis points upfront 0 to 21 12 Long-term debt $ 236,562 Structured notes Market approach Price $83 to $100 $92 Price €78 to €107 €94 November 30, 2018 Financial Instruments Owned Fair Value (in thousands) Valuation Technique Significant Unobservable Input(s) Input/Range Weighted Average Corporate equity securities $ 43,644 Non-exchange-traded securities Market approach Price $1 to $75 $12 Transaction level $47 — Corporate debt securities $ 9,484 Market approach Estimated recovery percentage 46% — Transaction level $80 — CDOs and CLOs $ 36,105 Discounted cash flows Constant prepayment rate 10% to 20% 18 % Constant default rate 1% to 2% 2 % Loss severity 25% to 30% 26 % Discount rate/yield 11% to 16% 14 % Scenario analysis Estimated recovery percentage 2% to 41% 23 % Residential mortgage-backed securities $ 19,603 Discounted cash flows Cumulative loss rate 4% — Duration (years) 13 years — Discount rate/yield 3% — Loss severity 0% — Market approach Price $100 — Commercial mortgage-backed securities $ 9,444 Discounted cash flows Cumulative loss rate 8% to 85% 45 % Duration (years) 1 year to 3 years 1 year Discount rate/yield 2% to 15% 6 % Loss severity 64% — Scenario analysis Estimated recovery percentage 26% — Price $49 — Other asset-backed securities $ 53,175 Discounted cash flows Cumulative loss rate 12% to 30% 22 % Duration (years) 1 year to 2 years 1 year Discount rate/yield 6% to 12% 8 % Market approach Price $100 — Loans and other receivables $ 46,078 Market approach Price $50 to $100 $96 Scenario analysis Estimated recovery percentage 13% to 117% 105 % Derivatives $ 4,602 Total return swaps Market approach Price $97 — Investments at fair value $ 368,231 Private equity securities Market approach Price $3 to $250 $108 Transaction level $169 — Scenario analysis Discount rate/yield 20% — Revenue growth 0% — Contingent claims analysis Volatility 25% to 35% 30 % Duration (years) 4 years — Investment in FXCM $ 73,150 Term loan Discounted cash flows Term based on the pay off (years) 0 months to 0.3 years 0.3 years Trading Liabilities Loans $ 6,376 Market approach Price $50 to $101 $74 Derivatives $ 27,536 Equity options Option model/default rate Default probability 0% — Volatility benchmarking Volatility 39% to 62% 50 % Interest rate swaps Market approach Price $20 — Total return swaps Market approach Price $97 — Long-term Debt $ 200,745 Structured notes Market approach Price $78 to $94 $86 Price €68 to €110 €96
Summary Of Gains (Losses) Due To Changes In Instrument Specific Credit Risk For Loans and Other Receivables And Loan Commitments Measured At Fair Value Under Fair Value Option	The following is a summary of Jefferies Group's gains (losses) due to changes in instrument specific credit risk on loans, other receivables and debt instruments and gains (losses) due to other changes in fair value on long-term debt and short-term borrowings measured at fair value under the fair value option (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Trading Assets: Loans and other receivables $ (2,352 ) $ (8,754 ) $ (3,072 ) $ (6,428 ) Trading Liabilities: Loans $ — $ 1 $ — $ 260 Loan commitments $ (757 ) $ 26 $ (678 ) $ (103 ) Long-term Debt: Changes in instrument specific credit risk (1) $ 4,009 $ 34,787 $ 27,492 $ 18,585 Other changes in fair value (2) $ (36,665 ) $ (175 ) $ (47,308 ) $ 40,979 Short-term Borrowings: Changes in instrument specific credit risk (1) $ — $ 27 $ — $ 27 Other changes in fair value (2) $ — $ 1,636 $ — $ 1,636 (1) Changes in instrument specific credit risk related to structured notes are included in the Consolidated Statements of Comprehensive Income (Loss), net of tax. (2)
Summary Of Amount By Which Contractual Principal Exceeds Fair Value For Loans And Other Receivables Measured At Fair Value Under Fair Value Option	The following is a summary of the amount by which contractual principal exceeds fair value for loans and other receivables and long-term debt measured at fair value under the fair value option (in thousands): May 31, November 30, 2018 Trading Assets: Loans and other receivables (1) $ 878,221 $ 961,554 Loans and other receivables on nonaccrual status and/or 90 days or greater past due (1) (2) $ 141,474 $ 158,392 Long-term Debt $ 95,079 $ 114,669 (1) Interest income is recognized separately from other changes in fair value and is included in Interest income in the Consolidated Statements of Operations. (2) Amounts include all loans and other receivables 90 days or greater past due by which contractual principal exceeds fair value of $18.7 million and $20.5 million at May 31, 2019 and November 30, 2018

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	6 Months Ended
	May 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value And Related Number Of Derivative Contracts Categorized By Predominant Risk Exposure	The following tables present the fair value and related number of derivative contracts at May 31, 2019 and November 30, 2018 categorized by type of derivative contract and the platform on which these derivatives are transacted. The fair value of assets/liabilities represents our receivable/payable for derivative financial instruments, gross of counterparty netting and cash collateral received and pledged. The following tables also provide information regarding (1) the extent to which, under enforceable master netting arrangements, such balances are presented net in our Consolidated Statements of Financial Condition as appropriate under GAAP and (2) the extent to which other rights of setoff associated with these arrangements exist and could have an effect on our financial position (in thousands, except contract amounts): Assets Liabilities Fair Value Number of Contracts (2) Fair Value Number of Contracts (2) May 31, 2019 (1) Derivatives designated as accounting hedges: Interest rate contracts: Cleared OTC $ 13,348 1 $ — — Total derivatives designated as accounting hedges 13,348 — Derivatives not designated as accounting hedges: Interest rate contracts: Exchange-traded 1,070 41,702 1,835 64,221 Cleared OTC 897,615 2,907 952,865 3,360 Bilateral OTC 405,268 2,002 239,880 752 Foreign exchange contracts: Exchange-traded — 36 — 59 Bilateral OTC 400,432 12,320 412,485 12,544 Equity contracts: Exchange-traded 621,087 1,703,475 921,170 1,327,055 Bilateral OTC 166,068 3,195 374,665 3,835 Commodity contracts: Exchange-traded 6,330 6,492 503 6,904 Bilateral OTC 30,792 2,283 4,355 1,787 Credit contracts: Cleared OTC 3,177 24 4,595 24 Bilateral OTC 9,075 98 11,898 58 Total derivatives not designated as accounting hedges 2,540,914 2,924,251 Total gross derivative assets/ liabilities: Exchange-traded 628,487 923,508 Cleared OTC 914,140 957,460 Bilateral OTC 1,011,635 1,043,283 Amounts offset in Consolidated Statement of Financial Condition (3): Exchange-traded (603,556 ) (603,556 ) Cleared OTC (897,715 ) (902,183 ) Bilateral OTC (696,492 ) (864,269 ) Net amounts per Consolidated Statement of Financial Condition (4) $ 356,499 $ 554,243 (continued) Assets Liabilities Fair Value Number of Contracts (2) Fair Value Number of Contracts (2) November 30, 2018 (1) Derivatives designated as accounting hedges: Interest rate contracts: Cleared OTC $ — — $ 29,647 1 Total derivatives designated as accounting hedges — 29,647 Derivatives not designated as accounting hedges: Interest rate contracts: Exchange-traded 924 32,159 513 66,095 Cleared OTC 422,670 2,095 411,833 2,394 Bilateral OTC 372,899 1,398 491,697 816 Foreign exchange contracts: Exchange-traded 42 538 2 690 Cleared OTC — — 36 3 Bilateral OTC 311,228 9,548 314,951 9,909 Equity contracts: Exchange-traded 1,202,927 2,104,684 2,061,137 1,779,836 Bilateral OTC 207,221 5,126 315,996 2,764 Commodity contracts: Exchange-traded 27,632 7,272 272 4,185 Bilateral OTC 10,191 1,274 1,445 1,498 Credit contracts: Cleared OTC 11,204 7 1,556 14 Bilateral OTC 13,768 123 11,618 79 Total derivatives not designated as accounting hedges 2,580,706 3,611,056 Total gross derivative assets/ liabilities: Exchange-traded 1,231,525 2,061,924 Cleared OTC 433,874 443,072 Bilateral OTC 915,307 1,135,707 Amounts offset in Consolidated Statement of Financial Condition (3): Exchange-traded (1,190,951 ) (1,190,951 ) Cleared OTC (407,351 ) (418,779 ) Bilateral OTC (815,629 ) (903,320 ) Net amounts per Consolidated Statement of Financial Condition (4) $ 166,775 $ 1,127,653 (1) Exchange-traded derivatives include derivatives executed on an organized exchange. Cleared OTC derivatives include derivatives executed bilaterally and subsequently novated to and cleared through central clearing counterparties. Bilateral OTC derivatives include derivatives executed and settled bilaterally without the use of an organized exchange or central clearing counterparty. (2) Number of exchange-traded contracts may include open futures contracts. The unsettled fair value of these futures contracts is included in Receivables and Payables, expense accruals and other liabilities in our Consolidated Statements of Financial Condition. (3) Amounts netted include both netting by counterparty and for cash collateral paid or received. (4) We have not received or pledged additional collateral under master netting agreements and/or other credit support agreements that is eligible to be offset beyond what has been offset in the Consolidated Statements of Financial Condition.
Unrealized And Realized Gains (Losses) On Derivative Contracts	The following table provides information related to gains (losses) recognized in Interest expense of Jefferies Group in the Consolidated Statements of Operations on a fair value hedge (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Interest rate swaps $ 27,204 $ 19 $ 41,791 $ (21,202 ) Long-term debt (28,213 ) 120 (43,769 ) 22,835 Total $ (1,009 ) $ 139 $ (1,978 ) $ 1,633 The following table presents unrealized and realized gains (losses) on derivative contracts which are primarily recognized in Principal transactions revenues in the Consolidated Statements of Operations, which are utilized in connection with our client activities and our economic risk management activities (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Interest rate contracts $ (34,020 ) $ (4,860 ) $ (103,851 ) $ 22,102 Foreign exchange contracts 2,284 8,390 2,108 11,518 Equity contracts (92,109 ) (45,419 ) (120,590 ) (250,565 ) Commodity contracts 21,045 (10,991 ) 1,772 (16,305 ) Credit contracts 4,818 1,731 8,913 740 Total $ (97,982 ) $ (51,149 ) $ (211,648 ) $ (232,510 )
Remaining Contract Maturity Of Fair Value Of OTC Derivative Assets And Liabilities	The following tables set forth by remaining contract maturity the fair value of OTC derivative assets and liabilities as reflected in the Consolidated Statement of Financial Condition at May 31, 2019 (in thousands): OTC Derivative Assets (1) (2) (3) 0-12 Months 1-5 Years Greater Than 5 Years Cross- Maturity Netting (4) Total Commodity swaps, options and forwards $ 15,034 $ 15,758 $ — $ (4,355 ) $ 26,437 Equity swaps and options 40,703 26 4,031 (2,233 ) 42,527 Credit default swaps 807 966 2,294 (469 ) 3,598 Total return swaps 9,675 51,481 — (1,607 ) 59,549 Foreign currency forwards, swaps and options 53,115 21,850 — (15,480 ) 59,485 Interest rate swaps, options and forwards 75,339 169,577 118,624 (70,534 ) 293,006 Total $ 194,673 $ 259,658 $ 124,949 $ (94,678 ) 484,602 Cross product counterparty netting (39,313 ) Total OTC derivative assets included in Trading assets $ 445,289 (1) At May 31, 2019 , we held exchange-traded derivative assets, other derivative assets and other credit agreements with a fair value of $28.3 million , which are not included in this table. (2) OTC derivative assets in the table above are gross of collateral received. OTC derivative assets are recorded net of collateral received in the Consolidated Statements of Financial Condition. At May 31, 2019 , cash collateral received was $117.1 million . (3) Derivative fair values include counterparty netting within product category. (4) Amounts represent the netting of receivable balances with payable balances for the same counterparty within product category across maturity categories. OTC Derivative Liabilities (1) (2) (3) 0-12 Months 1-5 Years Greater Than 5 Years Cross-Maturity Netting (4) Total Commodity swaps, options and forwards $ 1,986 $ 2,369 $ — $ (4,355 ) $ — Equity swaps and options 28,465 118,560 40,591 (2,233 ) 185,383 Credit default swaps 40 2,535 3,583 (469 ) 5,689 Total return swaps 89,603 37,003 — (1,607 ) 124,999 Foreign currency forwards, swaps and options 67,386 18,225 1,404 (15,480 ) 71,535 Fixed income forwards 600 — — — 600 Interest rate swaps, options and forwards 46,443 81,306 116,012 (70,534 ) 173,227 Total $ 234,523 $ 259,998 $ 161,590 $ (94,678 ) 561,433 Cross product counterparty netting (39,313 ) Total OTC derivative liabilities included in Trading liabilities $ 522,120 (1) At May 31, 2019 , we held exchange-traded derivative liabilities, other derivative liabilities and other credit agreements with a fair value of $321.4 million , which are not included in this table. (2) OTC derivative liabilities in the table above are gross of collateral pledged. OTC derivative liabilities are recorded net of collateral pledged in the Consolidated Statements of Financial Condition. At May 31, 2019 , cash collateral pledged was $289.3 million . (3) Derivative fair values include counterparty netting within product category. (4)
Counterparty Credit Quality With Respect To Fair Value Of OTC Derivatives Assets	At May 31, 2019 , the counterparty credit quality with respect to the fair value of our OTC derivative assets was as follows (in thousands): Counterparty credit quality (1): A- or higher $ 94,830 BBB- to BBB+ 24,884 BB+ or lower 194,336 Unrated 131,239 Total $ 445,289 (1) Jefferies Group utilizes internal credit ratings determined by Jefferies Group's Risk Management department. Credit ratings determined by Jefferies Group Risk Management use methodologies that produce ratings generally consistent with those produced by external rating agencies.
Credit Related Derivative Contracts	The external credit ratings of the underlyings or referenced assets for Jefferies Group's written credit related derivative contracts are as follows (in millions): External Credit Rating Investment Grade Non-investment grade Unrated Total Notional May 31, 2019 Credit protection sold: Index credit default swaps $ 3.0 $ 76.0 $ — $ 79.0 Single name credit default swaps $ 14.1 $ 50.4 $ 32.9 $ 97.4 November 30, 2018 Credit protection sold: Index credit default swaps $ 25.7 $ 167.4 $ — $ 193.1 Single name credit default swaps $ 57.7 $ 84.5 $ 3.0 $ 145.2
Derivative Instruments With Contingent Features	The following table presents the aggregate fair value of all derivative instruments with such credit-risk-related contingent features that are in a liability position, the collateral amounts posted or received in the normal course of business and the potential collateral Jefferies Group would have been required to return and/or post additionally to its counterparties if the credit-risk-related contingent features underlying these agreements were triggered (in millions): May 31, November 30, 2018 Derivative instrument liabilities with credit-risk-related contingent features $ 41.1 $ 93.5 Collateral posted $ (11.6 ) $ (61.5 ) Collateral received $ 30.5 $ 91.5 Return of and additional collateral required in the event of a credit rating downgrade below investment grade (1) $ 59.9 $ 123.3 (1) These potential outflows include initial margin received from counterparties at the execution of the derivative contract. The initial margin will be returned if counterparties elect to terminate the contract after a downgrade.

Collateralized Transactions (Ta

Collateralized Transactions (Tables)	6 Months Ended
	May 31, 2019
Collateralized Transactions [Abstract]
Schedule of Collateralized Financing Transactions	The following tables set forth the carrying value of securities lending arrangements and repurchase agreements by class of collateral pledged and remaining contractual maturity (in thousands): Collateral Pledged Securities Lending Arrangements Repurchase Agreements Total May 31, 2019 Corporate equity securities $ 2,006,944 $ 391,858 $ 2,398,802 Corporate debt securities 252,023 1,826,868 2,078,891 Mortgage- and asset-backed securities — 2,077,535 2,077,535 U.S. government and federal agency securities 68,838 12,234,328 12,303,166 Municipal securities — 612,747 612,747 Sovereign obligations — 3,184,103 3,184,103 Loans and other receivables — 765,751 765,751 Total $ 2,327,805 $ 21,093,190 $ 23,420,995 November 30, 2018 Corporate equity securities $ 1,505,218 $ 487,124 $ 1,992,342 Corporate debt securities 333,221 1,853,309 2,186,530 Mortgage- and asset-backed securities 249 2,820,543 2,820,792 U.S. government and federal agency securities — 8,181,947 8,181,947 Municipal securities — 604,274 604,274 Sovereign obligations — 2,945,521 2,945,521 Loans and other receivables — 300,768 300,768 Total $ 1,838,688 $ 17,193,486 $ 19,032,174 Contractual Maturity Overnight and Continuous Up to 30 Days 30 to 90 Days Greater than 90 Days Total May 31, 2019 Securities lending arrangements $ 1,382,312 $ — $ 644,948 $ 300,545 $ 2,327,805 Repurchase agreements 8,754,902 3,154,270 4,402,247 4,781,771 21,093,190 Total $ 10,137,214 $ 3,154,270 $ 5,047,195 $ 5,082,316 $ 23,420,995 November 30, 2018 Securities lending arrangements $ 807,347 $ — $ 560,417 $ 470,924 $ 1,838,688 Repurchase agreements 7,849,052 1,915,325 6,042,951 1,386,158 17,193,486 Total $ 8,656,399 $ 1,915,325 $ 6,603,368 $ 1,857,082 $ 19,032,174
Summary of Offsetting Assets	The following table provides information regarding repurchase agreements and securities borrowing and lending arrangements that are recognized in the Consolidated Statements of Financial Condition and (1) the extent to which, under enforceable master netting arrangements, such balances are presented net in the Consolidated Statements of Financial Condition as appropriate under GAAP and (2) the extent to which other rights of setoff associated with these arrangements exist and could have an effect on our consolidated financial position. (In thousands) Gross Amounts Netting in Consolidated Statements of Financial Condition Net Amounts in Consolidated Statements of Financial Condition Additional Amounts Available for Setoff (1) Available Collateral (2) Net Amount (3) Assets at May 31, 2019 Securities borrowing arrangements $ 7,713,886 $ — $ 7,713,886 $ (570,248 ) $ (1,585,821 ) $ 5,557,817 Reverse repurchase agreements 16,259,065 (12,231,733 ) 4,027,332 (526,433 ) (3,452,962 ) 47,937 Liabilities at May 31, 2019 Securities lending arrangements $ 2,327,805 $ — $ 2,327,805 $ (570,248 ) $ (1,694,029 ) $ 63,528 Repurchase agreements 21,093,190 (12,231,733 ) 8,861,457 (526,433 ) (7,103,993 ) 1,231,031 Assets at November 30, 2018 Securities borrowing arrangements $ 6,538,212 $ — $ 6,538,212 $ (468,778 ) $ (1,193,986 ) $ 4,875,448 Reverse repurchase agreements 11,336,175 (8,550,417 ) 2,785,758 (609,225 ) (2,126,730 ) 49,803 Liabilities at November 30, 2018 Securities lending arrangements $ 1,838,688 $ — $ 1,838,688 $ (468,778 ) $ (1,343,704 ) $ 26,206 Repurchase agreements 17,193,486 (8,550,417 ) 8,643,069 (609,225 ) (7,070,967 ) 962,877 (1) Under master netting agreements with its counterparties, Jefferies Group has the legal right of offset with a counterparty, which incorporates all of the counterparty’s outstanding rights and obligations under the arrangement. These balances reflect additional credit risk mitigation that is available by a counterparty in the event of a counterparty’s default, but which are not netted in the Consolidated Statement of Financial Condition because other netting provisions of GAAP are not met. (2) Includes securities received or paid under collateral arrangements with counterparties that could be liquidated in the event of a counterparty default and thus offset against a counterparty’s rights and obligations under the respective repurchase agreements or securities borrowing or lending arrangements. (3) At May 31, 2019 , amounts include $5,469.0 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $5,273.8 million , and $1,119.3 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $1,147.8 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable. At November 30, 2018 , amounts include $4,825.7 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $4,711.7 million , and $931.7 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $963.6 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable.
Summary of Offsetting Liabilities	The following table provides information regarding repurchase agreements and securities borrowing and lending arrangements that are recognized in the Consolidated Statements of Financial Condition and (1) the extent to which, under enforceable master netting arrangements, such balances are presented net in the Consolidated Statements of Financial Condition as appropriate under GAAP and (2) the extent to which other rights of setoff associated with these arrangements exist and could have an effect on our consolidated financial position. (In thousands) Gross Amounts Netting in Consolidated Statements of Financial Condition Net Amounts in Consolidated Statements of Financial Condition Additional Amounts Available for Setoff (1) Available Collateral (2) Net Amount (3) Assets at May 31, 2019 Securities borrowing arrangements $ 7,713,886 $ — $ 7,713,886 $ (570,248 ) $ (1,585,821 ) $ 5,557,817 Reverse repurchase agreements 16,259,065 (12,231,733 ) 4,027,332 (526,433 ) (3,452,962 ) 47,937 Liabilities at May 31, 2019 Securities lending arrangements $ 2,327,805 $ — $ 2,327,805 $ (570,248 ) $ (1,694,029 ) $ 63,528 Repurchase agreements 21,093,190 (12,231,733 ) 8,861,457 (526,433 ) (7,103,993 ) 1,231,031 Assets at November 30, 2018 Securities borrowing arrangements $ 6,538,212 $ — $ 6,538,212 $ (468,778 ) $ (1,193,986 ) $ 4,875,448 Reverse repurchase agreements 11,336,175 (8,550,417 ) 2,785,758 (609,225 ) (2,126,730 ) 49,803 Liabilities at November 30, 2018 Securities lending arrangements $ 1,838,688 $ — $ 1,838,688 $ (468,778 ) $ (1,343,704 ) $ 26,206 Repurchase agreements 17,193,486 (8,550,417 ) 8,643,069 (609,225 ) (7,070,967 ) 962,877 (1) Under master netting agreements with its counterparties, Jefferies Group has the legal right of offset with a counterparty, which incorporates all of the counterparty’s outstanding rights and obligations under the arrangement. These balances reflect additional credit risk mitigation that is available by a counterparty in the event of a counterparty’s default, but which are not netted in the Consolidated Statement of Financial Condition because other netting provisions of GAAP are not met. (2) Includes securities received or paid under collateral arrangements with counterparties that could be liquidated in the event of a counterparty default and thus offset against a counterparty’s rights and obligations under the respective repurchase agreements or securities borrowing or lending arrangements. (3) At May 31, 2019 , amounts include $5,469.0 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $5,273.8 million , and $1,119.3 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $1,147.8 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable. At November 30, 2018 , amounts include $4,825.7 million of securities borrowing arrangements, for which Jefferies Group has received securities collateral of $4,711.7 million , and $931.7 million of repurchase agreements, for which Jefferies Group has pledged securities collateral of $963.6 million , which are subject to master netting agreements, but Jefferies Group has not determined the agreements to be legally enforceable.

Securitization Activities (Tabl

Securitization Activities (Tables)	6 Months Ended
	May 31, 2019
Securitization Activities [Abstract]
Activity Related To Securitizations Accounted For As Sales	The following table presents activity related to Jefferies Group's securitizations that were accounted for as sales in which it had continuing involvement (in millions): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Transferred assets $ 844.5 $ 1,042.6 $ 2,105.1 $ 3,800.3 Proceeds on new securitizations $ 845.8 $ 1,043.4 $ 2,177.0 $ 3,802.3 Cash flows received on retained interests $ 24.3 $ 7.8 $ 36.6 $ 23.8
Summary Of Retained Interests In SPEs	The following table summarizes Jefferies Group's retained interests in SPEs where it transferred assets and has continuing involvement and received sale accounting treatment (in millions): May 31, 2019 November 30, 2018 Securitization Type Total Assets Retained Interests Total Assets Retained Interests U.S. government agency residential mortgage-backed securities $ 12,886.5 $ 121.5 $ 13,633.5 $ 365.3 U.S. government agency commercial mortgage-backed securities $ 1,374.9 $ 48.3 $ 2,027.6 $ 185.6 CLOs $ 4,943.3 $ 56.9 $ 3,512.0 $ 20.9 Consumer and other loans $ 657.1 $ 44.8 $ 604.1 $ 48.9

Available for Sale Securities_2

Available for Sale Securities and Other Investments (Tables)	6 Months Ended
	May 31, 2019
Investments [Abstract]
Schedule of Available for Sale Securities	The amortized cost, gross unrealized gains and losses and estimated fair value of investments classified as available for sale are as follows (in thousands): Amortized Gross Gross Estimated November 30, 2018 Bonds and notes: U.S. government securities $ 1,073,038 $ 1 $ 183 $ 1,072,856 Residential mortgage-backed securities 211,209 376 1,067 210,518 Commercial mortgage-backed securities 16,068 — 426 15,642 Other asset-backed securities 111,447 1 578 110,870 Total Available for sale securities $ 1,411,762 $ 378 $ 2,254 $ 1,409,886

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	May 31, 2019
Variable Interest Entities [Abstract]
Assets And Liabilities Of Consolidated VIEs	The following table presents information about the assets and liabilities of our consolidated securitization vehicles VIEs, which are presented in our Consolidated Statements of Financial Condition in the respective asset and liability categories (in millions). The assets and liabilities in the table below are presented prior to consolidation and thus a portion of these assets and liabilities are eliminated in consolidation. May 31, November 30, 2018 Securities purchased under agreement to resell (1) $ 1,266.9 $ 883.1 Receivables 549.9 626.0 Other 36.2 78.4 Total assets $ 1,853.0 $ 1,587.5 Other secured financings (2) $ 1,798.9 $ 1,535.3 Other (3) 43.5 45.9 Total liabilities $ 1,842.4 $ 1,581.2 (1) Securities purchased under agreements to resell represent an amount due under a collateralized transaction on related consolidated entities, which are eliminated in consolidation. (2) Approximately $1.0 million of the secured financings represent amounts held by Jefferies Group in inventory and are eliminated in consolidation at November 30, 2018 . (3) Includes $41.5 million and $44.1 million at May 31, 2019 and November 30, 2018 , respectively, of intercompany payables that are eliminated in consolidation.
Non-Consolidated Variable Interest Entities	The following tables present information about our variable interests in nonconsolidated VIEs (in millions): Financial Statement Carrying Amount Maximum Exposure to Loss VIE Assets Assets Liabilities May 31, 2019 CLOs $ 114.9 $ 0.6 $ 830.7 $ 7,980.2 Consumer loan and other asset-backed vehicles 427.3 — 570.1 3,322.6 Related party private equity vehicles 31.2 — 49.0 92.0 Other investment vehicles 507.0 — 526.8 8,144.2 Total $ 1,080.4 $ 0.6 $ 1,976.6 $ 19,539.0 November 30, 2018 CLOs $ 45.2 $ — $ 571.4 $ 3,281.9 Consumer loan and other asset-backed vehicles 462.1 — 807.1 3,273.1 Related party private equity vehicles 35.5 — 53.5 108.3 Other investment vehicles 203.6 — 214.7 5,719.1 Total $ 746.4 $ — $ 1,646.7 $ 12,382.4

Loans to and Investments In A_2

Loans to and Investments In Associated Companies (Tables)	6 Months Ended
	May 31, 2019
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Loans to and Investments in Associated Companies	A summary of Loans to and investments in associated companies accounted for under the equity method of accounting during the six months ended May 31, 2019 and June 30, 2018 is as follows (in thousands): Loans to and investments in associated companies as of beginning of period Income (losses) related to associated companies Income (losses) related to Jefferies Group's associated companies (1) Contributions to (distributions from) associated companies, net Other Loans to and investments in associated companies as of end of period 2019 Jefferies Finance $ 728,560 $ — $ 7,936 $ (63,070 ) $ — $ 673,426 Berkadia (2) 245,228 — 47,945 (18,124 ) 515 275,564 National Beef 653,630 62,051 — (54,940 ) (9 ) 660,732 FXCM (3) 75,031 (5,016 ) — — 10 70,025 Linkem 165,157 (8,581 ) — 49,590 (3,973 ) 202,193 HomeFed 337,542 (517 ) — — — 337,025 Other 212,184 1,546 (1,560 ) (16,122 ) 881 196,929 Total $ 2,417,332 $ 49,483 $ 54,321 $ (102,666 ) $ (2,576 ) $ 2,415,894 2018 Jefferies Finance $ 655,467 $ — $ 30,566 $ 31,461 $ — $ 717,494 Berkadia (2) 210,594 51,742 — (17,853 ) (720 ) 243,763 National Beef — 24,401 — (13,099 ) 592,239 603,541 FXCM (3) 158,856 (15,040 ) — — (34 ) 143,782 Garcadia companies (4) 179,143 20,955 — (22,915 ) (177,183 ) — Linkem 192,136 (12,764 ) — 542 (2,321 ) 177,593 HomeFed 341,874 4,445 — — — 346,319 Other 328,759 (8,286 ) (5,732 ) (25,412 ) 1,123 290,452 Total $ 2,066,829 $ 65,453 $ 24,834 $ (47,276 ) $ 413,104 $ 2,522,944 (1) Primarily classified in Other revenues. (2) In the fourth quarter of 2018, we transferred our interest in Berkadia to Jefferies Group. (3) As further described in Note 3, our investment in FXCM includes both our equity method investment in FXCM and our term loan with FXCM. Our equity method investment is included in Loans to and investments in associated companies and our term loan is included in Trading assets, at fair value in our Consolidated Statements of Financial Condition. (4) During the third quarter of 2018, we sold 100% of our equity interests in Garcadia and our associated real estate to our former partners, the Garff family. Income (losses) related to associated companies includes the following (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 National Beef $ 34,946 $ 24,401 $ 62,051 $ 24,401 Berkadia — 25,461 — 51,742 FXCM (2,300 ) (6,816 ) (5,016 ) (15,040 ) Garcadia companies — 9,572 — 20,955 Linkem (6,960 ) (5,309 ) (8,581 ) (12,764 ) HomeFed (2,500 ) (7,165 ) (517 ) 4,445 Other (1,016 ) (6,791 ) 1,546 (8,286 ) Total $ 22,170 $ 33,353 $ 49,483 $ 65,453 Income (losses) related to Jefferies Group's associated companies (primarily classified in Other revenues) includes the following (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Jefferies Finance $ 14,935 $ 20,733 $ 7,936 $ 30,566 Berkadia 25,296 — 47,945 — Other 2,753 (1,504 ) (1,560 ) (5,732 ) Total $ 42,984 $ 19,229 $ 54,321 $ 24,834
Schedule of Equity Method Investments	The following table provides required summarized data for certain equity method investments, including those accounted for under the fair value option. The table includes Jefferies Finance, Berkadia and Fiesta Restaurant Group, Inc. for the six months ended May 31, 2019 and June 30, 2018 ; HRG for the six month period ended June 30, 2018; and National Beef for the six months ended May 31, 2019 and for the period subsequent to the closing of the transaction with Marfrig on June 5, 2018 through June 30, 2018 (in thousands): For the Six Months Ended May 31, June 30, Revenues $ 4,736,971 $ 2,899,221 Income from continuing operations before extraordinary items $ 360,966 $ 330,849 Net income $ 360,966 $ 832,349

Intangible Assets, Net and Go_2

Intangible Assets, Net and Goodwill (Tables)	6 Months Ended
	May 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Intangible Assets, Net And Goodwill	A summary of Intangible assets, net and goodwill is as follows (in thousands): May 31, November 30, 2018 Indefinite-lived intangibles: Exchange and clearing organization membership interests and registrations $ 8,555 $ 8,524 Amortizable intangibles: Customer and other relationships, net of accumulated amortization of $106,731 and $102,579 63,691 67,894 Trademarks and tradenames, net of accumulated amortization of $22,895 and $21,086 105,315 107,262 Other, net of accumulated amortization of $4,882 and $4,339 4,068 4,611 Total intangible assets, net 181,629 188,291 Goodwill: Jefferies Group 1,697,842 1,698,381 Other operations 3,459 3,459 Total goodwill 1,701,301 1,701,840 Total intangible assets, net and goodwill $ 1,882,930 $ 1,890,131
Schedule of Estimated Aggregate Future Amortization Expense	The estimated aggregate future amortization expense for the intangible assets for each of the next five years is as follows (in thousands): Remainder of current year $ 6,719 2020 $ 13,439 2021 $ 13,085 2022 $ 10,110 2023 $ 9,001

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	6 Months Ended
	May 31, 2019
Debt Disclosure [Abstract]
Schedule of Short-term Borrowings	Jefferies Group's short-term borrowings, which mature in one year or less, are as follows (in thousands): May 31, November 30, 2018 Bank loans $ 454,590 $ 330,942 Floating rate puttable notes 55,845 56,550 Total short-term borrowings $ 510,435 $ 387,492

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	May 31, 2019
Aggregate Indebtedness [Abstract]
Schedule Of Indebtedness	The principal amount (net of unamortized discounts, premiums and debt issuance costs), stated interest rate and maturity date of outstanding debt are as follows (dollars in thousands): May 31, November 30, 2018 Parent Company Debt: Senior Notes: 5.50% Senior Notes due October 18, 2023, $750,000 principal $ 743,993 $ 743,397 6.625% Senior Notes due October 23, 2043, $250,000 principal 246,744 246,719 Total long-term debt – Parent Company 990,737 990,116 Subsidiary Debt (non-recourse to Parent Company): Jefferies Group: 8.50% Senior Notes, due July 15, 2019, $644,800 and $680,800 principal 648,382 699,659 2.375% Euro Medium Term Notes, due May 20, 2020, $558,450 and $565,500 principal 557,926 564,702 6.875% Senior Notes, due April 15, 2021, $750,000 principal 783,370 791,814 2.25% Euro Medium Term Notes, due July 13, 2022, $4,468 and $4,524 principal 4,225 4,243 5.125% Senior Notes, due January 20, 2023, $600,000 principal 611,492 612,928 4.85% Senior Notes, due January 15, 2027, $750,000 principal (1) 753,509 709,484 6.45% Senior Debentures, due June 8, 2027, $350,000 principal 372,563 373,669 4.15% Senior Notes, due January 23, 2030, $1,000,000 principal 988,220 987,788 6.25% Senior Debentures, due January 15, 2036, $500,000 principal 511,464 511,662 6.50% Senior Notes, due January 20, 2043, $400,000 principal 420,435 420,625 Structured Notes (2) 819,509 686,170 Jefferies Group Revolving Credit Facility 188,817 183,539 Foursight Capital Credit Facilities 123,579 — Other 86,756 81,164 Total long-term debt – subsidiaries 6,870,247 6,627,447 Long-term debt $ 7,860,984 $ 7,617,563 (1) Amount includes a loss of $43.8 million and a gain of $22.8 million during the six months ended May 31, 2019 and June 30, 2018 , respectively, associated with an interest rate swap based on its designation as a fair value hedge. See Note 4 for further information. (2) These structured notes contain various interest rate payment terms and are accounted for at fair value, with changes in fair value resulting from a change in the instrument specific credit risk presented in Accumulated other comprehensive income (loss) and changes in fair value resulting from non-credit components recognized in Principal transactions revenues.

Mezzanine Equity (Tables)

Mezzanine Equity (Tables)	6 Months Ended
	May 31, 2019
Temporary Equity Disclosure [Abstract]
Schedule Of Redeemable Noncontrolling Interests	The following table rolls forward National Beef’s redeemable noncontrolling interests activity (prior to its deconsolidation in June 2018) during the six months ended June 30, 2018 (in thousands): Balance, January 1, 2018 $ 412,128 Income allocated to redeemable noncontrolling interests 37,141 Distributions to redeemable noncontrolling interests (70,681 ) Increase in fair value of redeemable noncontrolling interests 21,404 Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustment prior to deconsolidation (237,669 ) Deconsolidation of National Beef (162,323 ) Balance, June 30, 2018 $ —

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	May 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Summary Of Accumulated Other Comprehensive Income, Net Of Taxes	A summary of accumulated other comprehensive income (loss), net of taxes is as follows (in thousands): May 31, November 30, 2018 Net unrealized gains on available for sale securities $ 33 $ 542,832 Net unrealized foreign exchange losses (202,595 ) (193,402 ) Net unrealized gains (losses) on instrument specific credit risk 14,916 (5,728 ) Net unrealized gains on cash flow hedges — 470 Net minimum pension liability (55,178 ) (55,886 ) $ (242,824 ) $ 288,286
Schedule Of Accumulated Other Comprehensive Income Reclassifications	Amounts reclassified out of accumulated other comprehensive income (loss) to net income are as follows (in thousands): Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified from Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Consolidated Statements of Operations For the Six Months Ended May 31, June 30, Net unrealized gains (losses) on available for sale securities, net of income tax provision (benefit) of $(545,054) and $37 $ 543,178 $ 103 Other revenues and Income tax provision (benefit) Net unrealized foreign exchange gains (losses), net of income tax provision (benefit) of $0 and $(16) — 20,459 Other revenues and Selling, general and other expenses Net unrealized (gains) losses on instrument specific credit risk, net of income tax provision (benefit) of $(166) and $78 (493 ) 270 Principal transactions revenues Net unrealized gains on cash flow hedges, net of income tax provision (benefit) of $161 and $0 470 — Other revenues Amortization of defined benefit pension plan actuarial losses, net of income tax benefit of $(241) and $(339) (708 ) (919 ) Selling, general and other expenses, which includes pension expense Other pension, net of income tax benefit of $0 and $0 — (5,344 ) Compensation and benefits expense Total reclassifications for the period, net of tax $ 542,447 $ 14,569

Revenues from Contracts with _2

Revenues from Contracts with Customers (Tables)	6 Months Ended
	May 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents our total revenues separated for our revenues from contracts with customers and our other sources of revenues (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Revenues from contracts with customers: Commissions and other fees $ 159,685 $ 157,704 $ 306,819 $ 305,606 Investment banking 430,087 500,297 715,683 940,288 Manufacturing revenues 90,237 114,735 165,662 213,100 Other 70,197 61,817 132,029 103,975 Total revenue from contracts with customers 750,206 834,553 1,320,193 1,562,969 Other sources of revenue: Principal transactions 240,189 53,755 486,371 199,418 Interest income 445,967 327,314 832,811 602,536 Other 74,009 28,204 66,008 40,014 Total revenue from other sources 760,165 409,273 1,385,190 841,968 Total revenues $ 1,510,371 $ 1,243,826 $ 2,705,383 $ 2,404,937 The following presents our revenues from contracts with customers disaggregated by major business activity and primary geographic regions (in thousands): Reportable Segments Major Business Activity: Jefferies Group Merchant Banking Corporate Consolidation Adjustments Total Three months ended May 31, 2019 Jefferies Group: Equities (1) $ 164,361 $ — $ — $ (88 ) $ 164,273 Fixed Income (1) 3,529 — — — 3,529 Investment Banking - Capital markets 251,533 — — — 251,533 Investment Banking - Advisory 178,554 — — — 178,554 Asset Management 4,550 — — — 4,550 Manufacturing revenues — 90,237 — — 90,237 Oil and gas revenues — 47,652 — — 47,652 Other revenues — 9,878 — — 9,878 Total revenues from contracts with customers $ 602,527 $ 147,767 $ — $ (88 ) $ 750,206 Primary Geographic Region: Americas $ 491,366 $ 147,505 $ — $ (88 ) $ 638,783 Europe, Middle East and Africa 92,560 223 — — 92,783 Asia 18,601 39 — — 18,640 Total revenues from contracts with customers $ 602,527 $ 147,767 $ — $ (88 ) $ 750,206 Three months ended June 30, 2018 Jefferies Group: Equities (1) $ 160,360 $ — $ — $ (400 ) $ 159,960 Fixed Income (1) 4,546 — — — 4,546 Investment Banking - Capital markets 283,315 — — — 283,315 Investment Banking - Advisory 216,982 — — — 216,982 Asset Management 6,016 — — — 6,016 Manufacturing revenues — 114,735 — — 114,735 Oil and gas revenues — 39,905 — — 39,905 Other revenues — 9,094 — — 9,094 Total revenues from contracts with customers $ 671,219 $ 163,734 $ — $ (400 ) $ 834,553 Primary Geographic Region: Americas $ 572,376 $ 163,454 $ — $ (400 ) $ 735,430 Europe, Middle East and Africa 78,861 207 — — 79,068 Asia 19,982 73 — — 20,055 Total revenues from contracts with customers $ 671,219 $ 163,734 $ — $ (400 ) $ 834,553 (1) Revenues from contracts with customers associated with the equities and fixed income businesses primarily represent commissions and other fee revenue. Reportable Segments Major Business Activity: Jefferies Group Merchant Banking Corporate Consolidation Adjustments Total Six months ended May 31, 2019 Jefferies Group: Equities (1) $ 316,422 $ — $ — $ (280 ) $ 316,142 Fixed Income (1) 6,597 — — — 6,597 Investment Banking - Capital markets 356,647 — — — 356,647 Investment Banking - Advisory 359,036 — — — 359,036 Asset Management 11,219 — — — 11,219 Manufacturing revenues — 165,662 — — 165,662 Oil and gas revenues — 84,017 — — 84,017 Other revenues — 20,873 — — 20,873 Total revenues from contracts with customers $ 1,049,921 $ 270,552 $ — $ (280 ) $ 1,320,193 Primary Geographic Region: Americas $ 818,123 $ 270,032 $ — $ (280 ) $ 1,087,875 Europe, Middle East and Africa 196,053 457 — — 196,510 Asia 35,745 63 — — 35,808 Total revenues from contracts with customers $ 1,049,921 $ 270,552 $ — $ (280 ) $ 1,320,193 Six months ended June 30, 2018 Jefferies Group: Equities (1) $ 311,990 $ — $ — $ (400 ) $ 311,590 Fixed Income (1) 7,504 — — — 7,504 Investment Banking - Capital markets 532,149 — — — 532,149 Investment Banking - Advisory 408,139 — — — 408,139 Asset Management 10,946 — — — 10,946 Manufacturing revenues — 213,100 — — 213,100 Oil and gas revenues — 60,235 — — 60,235 Other revenues — 19,306 — — 19,306 Total revenues from contracts with customers $ 1,270,728 $ 292,641 $ — $ (400 ) $ 1,562,969 Primary Geographic Region: Americas $ 1,093,230 $ 292,031 $ — $ (400 ) $ 1,384,861 Europe, Middle East and Africa 140,189 462 — — 140,651 Asia 37,309 148 — — 37,457 Total revenues from contracts with customers $ 1,270,728 $ 292,641 $ — $ (400 ) $ 1,562,969 (1) Revenues from contracts with customers associated with the equities and fixed income businesses primarily represent commissions and other fee revenue.

Common Share and Earnings Per_2

Common Share and Earnings Per Common Share (Tables)	6 Months Ended
	May 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share Computation	The numerators and denominators used to calculate basic and diluted earnings per share are as follows (in thousands): For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 Numerator for earnings per share: Net income attributable to Jefferies Financial Group Inc. common shareholders $ 670,764 $ 725,529 $ 715,575 $ 850,054 Allocation of earnings to participating securities (1) (4,086 ) (3,870 ) (4,241 ) (3,831 ) Net income attributable to Jefferies Financial Group Inc. common shareholders for basic earnings per share 666,678 721,659 711,334 846,223 Adjustment to allocation of earnings to participating securities related to diluted shares (1) 43 37 34 29 Mandatorily redeemable convertible preferred share dividends 1,276 — 2,552 — Net income attributable to Jefferies Financial Group Inc. common shareholders for diluted earnings per share $ 667,997 $ 721,696 $ 713,920 $ 846,252 Denominator for earnings per share: Weighted average common shares outstanding 293,600 342,719 299,067 349,647 Weighted average shares of restricted stock outstanding with future service required (1,873 ) (1,868 ) (1,851 ) (1,578 ) Weighted average RSUs outstanding with no future service required 15,283 11,198 13,892 11,168 Denominator for basic earnings per share – weighted average shares 307,010 352,049 311,108 359,237 Stock options — 7 — 18 Senior executive compensation plan awards 1,355 4,019 2,466 3,430 Mandatorily redeemable convertible preferred shares 4,162 — 4,162 — Denominator for diluted earnings per share 312,527 356,075 317,736 362,685 (1) Represents dividends declared during the period on participating securities plus an allocation of undistributed earnings to participating securities. Net losses are not allocated to participating securities. Participating securities represent restricted stock and RSUs for which requisite service has not yet been rendered and amounted to weighted average shares of 1,881,600 and 1,887,100 for the three months ended May 31, 2019 and June 30, 2018 , respectively, and 1,856,400 and 1,603,500 for the six months ended May 31, 2019 and June 30, 2018 , respectively. Dividends declared on participating securities were not material during the three and six months ended May 31, 2019 and June 30, 2018 . Undistributed earnings are allocated to participating securities based upon their right to share in earnings if all earnings for the period had been distributed.

Commitments, Contingencies an_2

Commitments, Contingencies and Guarantees (Tables)	6 Months Ended
	May 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	The following table summarizes commitments associated with certain business activities at May 31, 2019 (in millions): Expected Maturity Date 2019 2020 2021 2023 2025 Maximum Payout Equity commitments (1) $ 17.4 $ 127.9 $ 1.3 $ — $ 19.1 $ 165.7 Loan commitments (1) — 252.5 55.0 5.6 — 313.1 Underwriting commitments 264.2 — — — — 264.2 Forward starting reverse repos (2) 4,410.9 — — — — 4,410.9 Forward starting repos (2) 2,635.7 — — — — 2,635.7 Other unfunded commitments (1) 118.0 — 142.8 — 4.8 265.6 $ 7,446.2 $ 380.4 $ 199.1 $ 5.6 $ 23.9 $ 8,055.2 (1) Equity commitments, loan commitments and other unfunded commitments are presented by contractual maturity date. The amounts are however mostly available on demand. (2) At May 31, 2019 , $4,401.6 million within forward starting securities purchased under agreements to resell and $2,136.0 million within forward starting securities sold under agreements to repurchase settled within three business days.
Guarantees	The following table summarizes the notional amounts associated with Jefferies Group's derivative contracts meeting the definition of a guarantee under GAAP at May 31, 2019 (in millions): Expected Maturity Date Guarantee Type 2019 2020 2021 2023 2025 Notional/ Maximum Payout Derivative contracts – non-credit related $ 8,725.7 $ 2,869.3 $ 4,410.2 $ 3,263.9 $ 326.1 $ 19,595.2 Written derivative contracts – credit related — 32.9 — 64.5 — 97.4 Total derivative contracts $ 8,725.7 $ 2,902.2 $ 4,410.2 $ 3,328.4 $ 326.1 $ 19,692.6

Other Fair Value Information (T

Other Fair Value Information (Tables)	6 Months Ended
	May 31, 2019
Other Fair Value Information [Abstract]
Methods And Assumptions Used To Estimate The Fair Values	The carrying amounts and estimated fair values of our principal financial instruments that are not recognized at fair value on a recurring basis are as follows (in thousands): May 31, 2019 November 30, 2018 Carrying Amount Fair Value Carrying Amount Fair Value Receivables: Notes and loans receivable (1) $ 737,461 $ 739,607 $ 680,015 $ 676,152 Financial Liabilities: Short-term borrowings (2) $ 510,435 $ 510,435 $ 387,492 $ 387,492 Long-term debt (3) $ 7,041,475 $ 7,169,833 $ 6,931,393 $ 6,826,503 (1) Notes and loans receivable: The fair values are estimated principally based on a discounted future cash flows model using market interest rates for similar instruments. If measured at fair value in the financial statements, these financial instruments would be classified as Level 3 in the fair value hierarchy. (2) Short-term borrowings: The fair values of short-term borrowings are estimated to be the carrying amount due to their short maturities. If measured at fair value in the financial statements, these financial instruments would be classified as Level 3 in the fair value hierarchy. (3) Long-term debt: The fair values are estimated using quoted prices, pricing information obtained from external data providers and, for certain variable rate debt, is estimated to be the carrying amount. If measured at fair value in the financial statements, these financial instruments would be classified as Level 2 and Level 3 in the fair value hierarchy.

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	May 31, 2019
Discontinued Operations and Disposal Groups [Abstract]
Summary of results of discontinued operations	A summary of the results of discontinued operations for National Beef for the three and six months ended June 30, 2018 through the June 5, 2018 transaction with Marfrig is as follows (in thousands): For the Three Months Ended June 30, 2018 For the Six Months Ended June 30, 2018 Revenues: Beef processing services $ 1,355,691 $ 3,137,611 Interest income 63 131 Other 959 4,329 Total revenues 1,356,713 3,142,071 Expenses: Compensation and benefits 7,207 17,414 Cost of sales 1,214,207 2,884,983 Interest expense 2,207 4,316 Depreciation and amortization 18,440 43,959 Selling, general and other expenses 6,435 14,291 Total expenses 1,248,496 2,964,963 Income from discontinued operations before income taxes 108,217 177,108 Income tax provision 31,111 47,045 Income from discontinued operations, net of income tax provision $ 77,106 $ 130,063

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	May 31, 2019
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information, By Segment	Certain information concerning our segments is presented in the following table. Consolidated subsidiaries are reflected as of the date a majority controlling interest was acquired. As discussed above, Jefferies Group is reflected in our consolidated financial statements utilizing a one month lag for the three and six months ended June 30, 2018 . For the Three Months Ended For the Six Months Ended May 31, 2019 June 30, 2018 May 31, 2019 June 30, 2018 (In thousands) Net revenues: Reportable Segments: Jefferies Group (1) $ 901,851 $ 822,557 $ 1,587,569 $ 1,643,803 Merchant Banking (1) 187,324 86,417 323,662 160,318 Corporate 8,974 2,994 13,167 6,061 Total net revenues related to reportable segments 1,098,149 911,968 1,924,398 1,810,182 Consolidation adjustments 3,508 (809 ) 5,702 (3,588 ) Total consolidated net revenues $ 1,101,657 $ 911,159 $ 1,930,100 $ 1,806,594 Income (loss) from continuing operations before income taxes: Reportable Segments: Jefferies Group (1) $ 155,138 $ 121,865 $ 217,723 $ 244,603 Merchant Banking (1) 51,224 (50,058 ) 71,329 (99,315 ) Corporate (13,885 ) (21,215 ) (35,228 ) (42,740 ) Income from continuing operations before income taxes related to reportable segments 192,477 50,592 253,824 102,548 Parent Company interest (14,766 ) (14,750 ) (29,528 ) (29,496 ) Consolidation adjustments 5,768 1,673 8,500 2,226 Total consolidated income from continuing operations before income taxes $ 183,479 $ 37,515 $ 232,796 $ 75,278 Depreciation and amortization expenses: Reportable Segments: Jefferies Group (1) $ 18,968 $ 17,288 $ 36,630 $ 33,654 Merchant Banking (1) 16,951 13,740 32,368 24,664 Corporate 867 877 1,722 1,747 Total consolidated depreciation and amortization expenses $ 36,786 $ 31,905 $ 70,720 $ 60,065 (1) Amounts related to LAM and Berkadia are included in Merchant Banking prior to their transfer to Jefferies Group in the fourth quarter of 2018. For the three and six months ended June 30, 2018 , net revenues related to the net assets transferred were $15.8 million and $(20.8) million , respectively, and income from continuing operations before income taxes related to the net assets transferred was $29.8 million and $9.1 million , respectively.

Nature of Operations (Details)

Nature of Operations (Details) shares in Thousands, $ in Thousands	Jul. 01, 2019shares	May 31, 2019USD ($)Segment	Jun. 30, 2018USD ($)	Dec. 31, 2013USD ($)	Jun. 30, 2019	Jul. 13, 2018	Jun. 05, 2018	Jun. 04, 2018
Schedule of Equity Method Investments [Line Items]
Number of business segments | Segment		3
Payments to acquire investments | $		$ 1,986	$ 1,961,344
National Beef
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		31.00%					31.00%
Ownership percentage								79.00%
Spectrum Brands
Schedule of Equity Method Investments [Line Items]
Ownership percentage		15.00%				14.00%
Linkem
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		42.00%
Percentage of ownership upon conversion of preferred shares		54.00%
WeWork
Schedule of Equity Method Investments [Line Items]
Payments to acquire investments | $				$ 9,000
HomeFed
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		70.00%
Jefferies Group
Schedule of Equity Method Investments [Line Items]
Number of business segments | Segment		2
National Beef | Discontinued operations, disposed of by sale
Schedule of Equity Method Investments [Line Items]
Ownership percentage							48.00%
Maximum | WeWork
Schedule of Equity Method Investments [Line Items]
Ownership percentage		1.00%
Vitesse Energy, LLC
Schedule of Equity Method Investments [Line Items]
Ownership percentage		97.00%
JETX Energy
Schedule of Equity Method Investments [Line Items]
Ownership percentage		98.00%
Subsequent Event
Schedule of Equity Method Investments [Line Items]
Number of shares authorized to be repurchased | shares	9,250
Subsequent Event | HomeFed
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					70.00%
Number of shares issued per common stock of acquiree	2
Subsequent Event | HomeFed
Schedule of Equity Method Investments [Line Items]
Number of shares issued | shares	9,300

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018	May 31, 2019	Jun. 30, 2018
Loans and Leases Receivable Disclosure [Line Items]
Receivables from brokers, dealers and clearing organizations	$ 3,898,500	$ 3,223,700	$ 3,898,500
Receivables from customers of securities operations	1,788,200	2,017,100	1,788,200
Payables to brokers, dealers and clearing organizations	2,467,400	2,465,600	2,467,400
Payables to customers of securities operations	3,138,100	3,176,700	3,138,100
Cash paid during the year for:
Interest			808,740	$ 654,370
Income tax payments (refunds), net			21,410	$ 15,804
Foursight Capital | Automobile Loan
Loans and Leases Receivable Disclosure [Line Items]
Auto loan receivables	$ 704,200	$ 648,700	$ 704,200
Credit Concentration Risk | Loans Receivable | Prime | Foursight Capital | Automobile Loan
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk, percentage	15.00%	13.00%
Credit Concentration Risk | Loans Receivable | Near-Prime | Foursight Capital | Automobile Loan
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk, percentage	54.00%	57.00%
Credit Concentration Risk | Loans Receivable | Subprime | Foursight Capital | Automobile Loan
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk, percentage	31.00%	30.00%

Fair Value Disclosures (Schedul

Fair Value Disclosures (Schedule Of Assets And Liabilities Measured On Recurring Basis At Fair Value) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Assets:
Trading assets, at fair value	$ 16,532,165	$ 17,068,897
Derivative assets	356,499	166,775
Counterparty and Cash Collateral Netting, assets	(2,197,763)	(2,413,931)
Securities purchased under agreements to resell	25,000
Available for sale securities	0	1,409,886
Liabilities:
Trading liabilities, at fair value	10,113,390	9,478,946
Derivative liability	554,243	1,127,653
Counterparty and Cash Collateral Netting, liabilities	(2,370,008)	(2,513,050)
Long-term debt	819,509	686,170
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	543,429	707,960
Level 1
Assets:
Trading assets, at fair value	6,090,224	6,091,056
Derivative assets	16,348	34,841
Securities purchased under agreements to resell	0
Available for sale securities		1,072,856
Liabilities:
Trading liabilities, at fair value	5,254,017	4,831,081
Derivative liability	24,578	26,473
Long-term debt	0	0
Level 2
Assets:
Trading assets, at fair value	11,900,656	12,688,016
Derivative assets	2,529,500	2,539,943
Securities purchased under agreements to resell	0
Available for sale securities		337,030
Liabilities:
Trading liabilities, at fair value	7,163,200	7,126,481
Derivative liability	2,843,810	3,586,694
Long-term debt	582,947	485,425
Level 3
Assets:
Trading assets, at fair value	739,048	703,756
Derivative assets	8,414	5,922
Securities purchased under agreements to resell	25,000
Available for sale securities		0
Liabilities:
Trading liabilities, at fair value	66,181	34,434
Derivative liability	55,863	27,536
Long-term debt	236,562	200,745
Fair Value Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Alternative investments	646,419	394,359
Corporate equity securities
Assets:
Trading assets, at fair value	2,893,386	2,667,918
Liabilities:
Trading liabilities, at fair value	2,669,887	1,686,515
Corporate equity securities | Level 1
Assets:
Trading assets, at fair value	2,701,693	2,497,045
Liabilities:
Trading liabilities, at fair value	2,664,846	1,685,071
Corporate equity securities | Level 2
Assets:
Trading assets, at fair value	132,121	118,681
Liabilities:
Trading liabilities, at fair value	4,820	1,444
Corporate equity securities | Level 3
Assets:
Trading assets, at fair value	59,572	52,192
Liabilities:
Trading liabilities, at fair value	221	0
Corporate debt securities
Assets:
Trading assets, at fair value	2,986,408	2,692,664
Liabilities:
Trading liabilities, at fair value	1,920,135	1,506,140
Corporate debt securities | Level 1
Assets:
Trading assets, at fair value	0	0
Liabilities:
Trading liabilities, at fair value	0	0
Corporate debt securities | Level 2
Assets:
Trading assets, at fair value	2,978,062	2,683,180
Liabilities:
Trading liabilities, at fair value	1,919,466	1,505,618
Corporate debt securities | Level 3
Assets:
Trading assets, at fair value	8,346	9,484
Liabilities:
Trading liabilities, at fair value	669	522
Collateralized debt obligations and collateralized loan obligations
Assets:
Trading assets, at fair value	149,752	109,054
Collateralized debt obligations and collateralized loan obligations | Level 1
Assets:
Trading assets, at fair value	0	0
Collateralized debt obligations and collateralized loan obligations | Level 2
Assets:
Trading assets, at fair value	123,840	72,949
Collateralized debt obligations and collateralized loan obligations | Level 3
Assets:
Trading assets, at fair value	25,912	36,105
U.S. government securities
Assets:
Trading assets, at fair value	1,620,643	1,846,206
Available for sale securities		1,072,856
Liabilities:
Trading liabilities, at fair value	1,236,461	1,384,295
U.S. government securities | Level 1
Assets:
Trading assets, at fair value	1,505,882	1,789,614
Liabilities:
Trading liabilities, at fair value	1,236,461	1,384,295
U.S. government securities | Level 2
Assets:
Trading assets, at fair value	114,761	56,592
Liabilities:
Trading liabilities, at fair value	0	0
U.S. government securities | Level 3
Assets:
Trading assets, at fair value	0	0
Liabilities:
Trading liabilities, at fair value	0	0
Municipal securities
Assets:
Trading assets, at fair value	980,138	894,253
Municipal securities | Level 1
Assets:
Trading assets, at fair value	0	0
Municipal securities | Level 2
Assets:
Trading assets, at fair value	980,138	894,253
Municipal securities | Level 3
Assets:
Trading assets, at fair value	0	0
Sovereign obligations
Assets:
Trading assets, at fair value	2,886,412	2,812,965
Liabilities:
Trading liabilities, at fair value	2,198,171	2,396,337
Sovereign obligations | Level 1
Assets:
Trading assets, at fair value	1,866,301	1,769,556
Liabilities:
Trading liabilities, at fair value	1,328,132	1,735,242
Sovereign obligations | Level 2
Assets:
Trading assets, at fair value	1,020,111	1,043,409
Liabilities:
Trading liabilities, at fair value	870,039	661,095
Sovereign obligations | Level 3
Assets:
Trading assets, at fair value	0	0
Liabilities:
Trading liabilities, at fair value	0	0
Residential mortgage-backed securities
Assets:
Trading assets, at fair value	1,177,227	2,183,232
Available for sale securities		210,518
Residential mortgage-backed securities | Level 1
Assets:
Trading assets, at fair value	0	0
Available for sale securities		0
Residential mortgage-backed securities | Level 2
Assets:
Trading assets, at fair value	1,159,961	2,163,629
Available for sale securities		210,518
Residential mortgage-backed securities | Level 3
Assets:
Trading assets, at fair value	17,266	19,603
Available for sale securities		0
Commercial mortgage-backed securities
Assets:
Trading assets, at fair value	417,427	830,292
Available for sale securities		15,642
Liabilities:
Trading liabilities, at fair value	724
Commercial mortgage-backed securities | Level 1
Assets:
Trading assets, at fair value	0	0
Available for sale securities		0
Liabilities:
Trading liabilities, at fair value	0
Commercial mortgage-backed securities | Level 2
Assets:
Trading assets, at fair value	404,897	819,406
Available for sale securities		15,642
Liabilities:
Trading liabilities, at fair value	724
Commercial mortgage-backed securities | Level 3
Assets:
Trading assets, at fair value	12,530	10,886
Available for sale securities		0
Liabilities:
Trading liabilities, at fair value	0
Other asset-backed securities
Assets:
Trading assets, at fair value	310,750	292,556
Available for sale securities		110,870
Other asset-backed securities | Level 1
Assets:
Trading assets, at fair value	0	0
Available for sale securities		0
Other asset-backed securities | Level 2
Assets:
Trading assets, at fair value	267,565	239,381
Available for sale securities		110,870
Other asset-backed securities | Level 3
Assets:
Trading assets, at fair value	43,185	53,175
Available for sale securities		0
Loans and other receivables
Assets:
Trading assets, at fair value	2,204,126	2,103,578
Loans and other receivables | Level 1
Assets:
Trading assets, at fair value	0	0
Loans and other receivables | Level 2
Assets:
Trading assets, at fair value	2,105,642	2,056,593
Loans and other receivables | Level 3
Assets:
Trading assets, at fair value	98,484	46,985
Investments at fair value
Assets:
Trading assets, at fair value	492,797	396,254
Investments at fair value | Level 1
Assets:
Trading assets, at fair value	0	0
Investments at fair value | Level 2
Assets:
Trading assets, at fair value	84,058	0
Investments at fair value | Level 3
Assets:
Trading assets, at fair value	408,739	396,254
FXCM term loan
Assets:
Trading assets, at fair value	56,600	73,150
FXCM term loan | Level 1
Assets:
Trading assets, at fair value	0	0
FXCM term loan | Level 2
Assets:
Trading assets, at fair value	0	0
FXCM term loan | Level 3
Assets:
Trading assets, at fair value	56,600	73,150
Loans
Liabilities:
Trading liabilities, at fair value	1,533,769	1,378,006
Loans | Level 1
Liabilities:
Trading liabilities, at fair value	0	0
Loans | Level 2
Liabilities:
Trading liabilities, at fair value	1,524,341	1,371,630
Loans | Level 3
Liabilities:
Trading liabilities, at fair value	9,428	6,376
U.S. government securities
Assets:
Available for sale securities		1,072,856
U.S. government securities | Level 1
Assets:
Available for sale securities		1,072,856
Liabilities:
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 34,800	34,800
U.S. government securities | Level 2
Assets:
Available for sale securities		0
U.S. government securities | Level 3
Assets:
Available for sale securities		$ 0

Fair Value Disclosures (Investm

Fair Value Disclosures (Investments Measured At Fair Value Based On Net Asset Value) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018	Dec. 31, 2013
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 19,679	$ 20,996	$ 19,679		$ 20,996
Investment redemption restriction period	36 months
Investment redemption restriction period remaining	31 months
Payments to acquire investments			1,986	$ 1,961,344
Trading assets, at fair value	$ 17,178,584	17,463,256	17,178,584		17,463,256
Equity Long/Short Hedge Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 0	$ 0	$ 0		$ 0
Percentage of investment at fair value, redemption restriction	73.00%	0.00%	73.00%		0.00%
Percentage of investments redeemable	22.00%	82.00%	22.00%		82.00%
Equity Long/Short Hedge Funds | 45 to 90 days prior written notice | Minimum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period redemption of investments prior written notice period	45 days	45 days
Equity Long/Short Hedge Funds | 45 to 90 days prior written notice | Maximum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period redemption of investments prior written notice period	90 days	90 days
Equity Long/Short Hedge Funds | 60 days prior written notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Notice period redemption of investments prior written notice period	60 days	60 days
Percentage of investments redeemable	5.00%	17.00%	5.00%		17.00%
Equity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 19,679	$ 20,996	$ 19,679		$ 20,996
Equity Funds | Minimum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated period for the liquidation of the underlying assets			1 year		1 year
Equity Funds | Maximum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Estimated period for the liquidation of the underlying assets			10 years		10 years
Commodity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 0	$ 0	$ 0		$ 0
Notice period redemption of investments prior written notice period	60 days	60 days
Multi-asset Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 0	$ 0	$ 0		$ 0
Notice period redemption of investments prior written notice period	30 days	30 days
Percentage of investments redeemable	5.00%	15.00%	5.00%		15.00%
Other funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 0	$ 0	$ 0		$ 0
Fair Value Measured at NAV
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	646,419	394,359	646,419		394,359
Fair Value Measured at NAV | Equity Long/Short Hedge Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	361,046	86,788	361,046		86,788
Fair Value Measured at NAV | Equity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	35,863	40,070	35,863		40,070
Fair Value Measured at NAV | Commodity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	15,672	10,129	15,672		10,129
Fair Value Measured at NAV | Multi-asset Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	233,512	256,972	233,512		256,972
Fair Value Measured at NAV | Other funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	326	400	326		400
WeWork
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Payments to acquire investments						$ 9,000
Trading assets, at fair value	$ 269,200	$ 254,400	$ 269,200		$ 254,400
WeWork | Maximum
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Ownership percentage	1.00%		1.00%

Fair Value Disclosures (Inves_2

Fair Value Disclosures (Investment in FXCM Narrative) (Details) - Investment in FXCM $ in Millions	May 31, 2019USD ($)
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Senior secured term loan receivable, principal outstanding	$ 71.9
Equity method investment, ownership percentage	50.00%

Fair Value Disclosures (Level 3

Fair Value Disclosures (Level 3 Rollforwards) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Assets:
Total gains (losses) (realized and unrealized)	$ 23,200	$ (10,700)	$ 23,300	$ 16,700
Liabilities:
Total gains/ losses (realized and unrealized)		25,800		27,600
Total gains (losses) (realized and unrealized), included in earnings and OCI	14,100		42,800
Fair value, Liabilities, change in unrealized gains/(losses) included in other comprehensive income relating to instruments still held	(400)		9,000
Corporate equity securities
Assets:
Beginning Balance	55,576	35,753	52,192	22,270
Total gains (losses) (realized and unrealized)	1,808	2,951	5,239	15,052
Purchases	221	1,485	785	5,383
Sales	(179)	(75)	(2,031)	(520)
Settlements	(551)	(110)	(720)	(1,779)
Issuances	0		0
Net transfers into (out of) Level 3	2,697	4,867	4,107	4,465
Ending Balance	59,572	44,871	59,572	44,871
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	1,909	3,241	7,085	14,419
Liabilities:
Beginning Balance	78	61	0	48
Total gains/ losses (realized and unrealized)	(74)	26	(76)	39
Purchases	(1,520)	0	(1,546)	0
Sales	1,737	0	1,843	0
Settlements	0	0	0	0
Issuances	0	0	0	0
Net transfers into (out of) Level 3	0	0	0	0
Ending Balance	221	87	221	87
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	0	(26)	0	(39)
Corporate debt securities
Assets:
Beginning Balance	10,930	26,103	9,484	26,036
Total gains (losses) (realized and unrealized)	(306)	923	(108)	434
Purchases	816	17,058	2,181	19,304
Sales	0	(13,481)	(2,130)	(15,704)
Settlements	(325)	0	(1,177)	(2,049)
Issuances	0		0
Net transfers into (out of) Level 3	(2,769)	(2,537)	96	45
Ending Balance	8,346	28,066	8,346	28,066
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(307)	543	(53)	(1,048)
Liabilities:
Beginning Balance	730	522	522	522
Total gains/ losses (realized and unrealized)	(148)	0	(382)	0
Purchases	(7)	0	(73)	0
Sales	1	0	93	0
Settlements	22	0	22	0
Issuances	0	0	0	0
Net transfers into (out of) Level 3	71	0	487	0
Ending Balance	669	522	669	522
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	90	0	305	0
CDOs and CLOs
Assets:
Beginning Balance	43,144	38,613	36,105	42,184
Total gains (losses) (realized and unrealized)	(1,663)	(2,616)	(1,233)	(3,227)
Purchases	0	251	4,782	568
Sales	0	(1,905)	0	(2,374)
Settlements	(991)	(431)	(2,130)	(3,765)
Issuances	0		0
Net transfers into (out of) Level 3	(14,578)	8,605	(11,612)	9,131
Ending Balance	25,912	42,517	25,912	42,517
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(2,656)	(2,688)	(3,127)	(5,641)
Residential mortgage-backed securities
Assets:
Beginning Balance	20,963	21,762	19,603	26,077
Total gains (losses) (realized and unrealized)	(802)	(5,416)	(316)	(4,193)
Purchases	0	112	39	112
Sales	0	(13,113)	0	(10,959)
Settlements	(18)	(35)	(45)	(88)
Issuances	0		0
Net transfers into (out of) Level 3	(2,877)	345	(2,015)	(7,294)
Ending Balance	17,266	3,655	17,266	3,655
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(759)	423	(271)	419
Commercial mortgage-backed securities
Assets:
Beginning Balance	12,820	15,103	10,886	12,419
Total gains (losses) (realized and unrealized)	(357)	(2,213)	(180)	(2,292)
Purchases	0	0	11	1,208
Sales	(331)	0	(331)	(487)
Settlements	(3,238)	(1,924)	(3,278)	(3,209)
Issuances	0		0
Net transfers into (out of) Level 3	3,636	16,273	5,422	19,600
Ending Balance	12,530	27,239	12,530	27,239
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(1,292)	(2,706)	(1,183)	(3,176)
Liabilities:
Beginning Balance	70	35		105
Total gains/ losses (realized and unrealized)	(70)	(35)		(105)
Purchases	0	0		0
Sales	0	0		0
Settlements	0	0		0
Issuances	0	0		0
Net transfers into (out of) Level 3	0	0		0
Ending Balance	0	0	0	0
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	0	0		0
Other asset-backed securities
Assets:
Beginning Balance	35,886	51,288	53,175	61,129
Total gains (losses) (realized and unrealized)	3,070	(4,001)	(1,014)	(5,476)
Purchases	16,531	59,057	25,316	132,291
Sales	(8,868)	(62,905)	(13,247)	(124,787)
Settlements	(8,549)	(3,846)	(9,529)	(7,622)
Issuances	0		0
Net transfers into (out of) Level 3	5,115	15,942	(11,516)	0
Ending Balance	43,185	55,535	43,185	55,535
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	3,563	(2,670)	(522)	(2,498)
Loans and other receivables
Assets:
Beginning Balance	78,051	62,043	46,985	47,304
Total gains (losses) (realized and unrealized)	(2,753)	(6,051)	2,434	(201)
Purchases	38,780	19,029	77,004	46,682
Sales	(13,898)	(16,237)	(33,549)	(25,456)
Settlements	(2,438)	(1,940)	(3,378)	(11,648)
Issuances	0		0
Net transfers into (out of) Level 3	742	7,192	8,988	7,355
Ending Balance	98,484	64,036	98,484	64,036
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(1,277)	(5,185)	844	(1,756)
Investments at fair value
Assets:
Beginning Balance	421,098	318,159	396,254	329,944
Total gains (losses) (realized and unrealized)	35,594	(807)	29,454	1,483
Purchases	10,169	3,501	41,512	3,740
Sales	(18,302)	(2,310)	(18,302)	(17,570)
Settlements	0	0	0	0
Issuances	0		0
Net transfers into (out of) Level 3	(39,820)	0	(40,179)	946
Ending Balance	408,739	318,543	408,739	318,543
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	35,594	(807)	29,454	889
FXCM term loan
Assets:
Beginning Balance	73,600	73,200	73,150	72,800
Total gains (losses) (realized and unrealized)	(11,412)	6,488	(10,962)	15,085
Purchases	1,500	0	1,500	0
Sales	0	0	0	0
Settlements	(7,088)	(3,588)	(7,088)	(11,785)
Issuances	0		0
Net transfers into (out of) Level 3	0	0	0	0
Ending Balance	56,600	76,100	56,600	76,100
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	(11,412)	2,900	(10,962)	7,839
Securities purchased under agreements to resell
Assets:
Beginning Balance	0		0
Total gains (losses) (realized and unrealized)	0		0
Purchases	0		0
Sales	0		0
Settlements	0		0
Issuances	25,000		25,000
Net transfers into (out of) Level 3	0		0
Ending Balance	25,000		25,000
Fair value, Assets, change in unrealized gains/(losses) included in earnings relating to instruments still held	0		0
Loans
Liabilities:
Beginning Balance	3,420	10,323	6,376	3,486
Total gains/ losses (realized and unrealized)	(191)	(3,416)	(401)	1,226
Purchases	(1,678)	(10,543)	(3,946)	(5,100)
Sales	1,537	8,685	7,963	12,092
Settlements	0	(29)	0	0
Issuances	0	0	0	0
Net transfers into (out of) Level 3	6,340	7,861	(564)	1,177
Ending Balance	9,428	12,881	9,428	12,881
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	364	3,231	579	106
Derivatives
Liabilities:
Beginning Balance	28,975	6,882	21,614	6,746
Total gains/ losses (realized and unrealized)	(14,760)	(1,580)	(29,079)	(668)
Purchases	(25)	0	(2,829)	(6)
Sales	4,175	0	7,259	0
Settlements	1,974	569	2,031	(494)
Issuances	0	0	0	296
Net transfers into (out of) Level 3	27,110	3	48,453	0
Ending Balance	47,449	5,874	47,449	5,874
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	7,565	(115)	19,607	535
Long-term debt
Liabilities:
Beginning Balance	283,139	0	200,745	0
Total gains/ losses (realized and unrealized)		(20,838)		(28,082)
Total gains (losses) (realized and unrealized), included in earnings and OCI	1,163		(12,854)
Purchases	0	0	0	0
Sales	0	0	0	0
Settlements	(5,585)	0	(11,250)	0
Issuances	39,385	23,362	101,872	81,284
Net transfers into (out of) Level 3	(81,540)	158,102	(41,951)	107,424
Ending Balance	236,562	160,626	236,562	160,626
Fair value, Liabilities, change in unrealized gains/(losses) included in earnings relating to instruments still held	$ (813)	$ 20,838	$ 3,827	$ 20,082

Fair Value Disclosures (Analysi

Fair Value Disclosures (Analysis of Level 3 Assets and Liabilities Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 2 to Level 3	$ 31,700	$ 78,700	$ 42,300	$ 49,100
Transfers of assets from Level 3 to Level 2	79,500	28,000	89,000	14,900
Transfers of liabilities from Level 2 to Level 3	57,400		69,600
Transfers of liabilities from Level 3 to Level 2	105,400		63,200
Net gains (losses) on Level 3 assets (realized and unrealized)	23,200	(10,700)	23,300	16,700
Net gains (losses) on Level 3 liabilities (realized and unrealized)		25,800		27,600
Net gains (losses) on Level 3 liabilities (realized and unrealized), included in earnings and OCI	14,100		42,800
Excluded assets from unobservable quantitative information	73,600		73,600		$ 40,300
Excluded liabilities from unobservable quantitative information	900		900		$ 500
Loans and other receivables
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 2 to Level 3	11,300	16,400	15,700
Transfers of assets from Level 3 to Level 2	10,500	9,200
Net gains (losses) on Level 3 assets (realized and unrealized)	(2,753)	(6,051)	2,434	(201)
CDOs and CLOs
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 2 to Level 3		20,300		12,700
Transfers of assets from Level 3 to Level 2	17,600	11,700	12,500
Net gains (losses) on Level 3 assets (realized and unrealized)	(1,663)	(2,616)	(1,233)	(3,227)
Commercial mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 2 to Level 3		17,100		19,700
Net gains (losses) on Level 3 assets (realized and unrealized)	(357)	(2,213)	(180)	(2,292)
Net gains (losses) on Level 3 liabilities (realized and unrealized)	(70)	(35)		(105)
Residential mortgage-backed securities
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 3 to Level 2				9,000
Net gains (losses) on Level 3 assets (realized and unrealized)	(802)	(5,416)	(316)	(4,193)
Other asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 2 to Level 3	7,600	15,900	10,800
Transfers of assets from Level 3 to Level 2			22,300
Net gains (losses) on Level 3 assets (realized and unrealized)	3,070	(4,001)	(1,014)	(5,476)
Investments at fair value
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of assets from Level 3 to Level 2	39,800		40,200
Net gains (losses) on Level 3 assets (realized and unrealized)	35,594	(807)	29,454	1,483
Structured Notes
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of liabilities from Level 2 to Level 3	9,500		10,300
Transfers of liabilities from Level 3 to Level 2	91,000		52,300
Derivatives
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of liabilities from Level 2 to Level 3	41,500		58,700
Transfers of liabilities from Level 3 to Level 2	14,400
Net gains (losses) on Level 3 liabilities (realized and unrealized)	(14,760)	(1,580)	(29,079)	(668)
Long-term debt
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Transfers of liabilities from Level 2 to Level 3		158,100		107,400
Net gains (losses) on Level 3 liabilities (realized and unrealized)		$ (20,838)		$ (28,082)
Net gains (losses) on Level 3 liabilities (realized and unrealized), included in earnings and OCI	$ 1,163		$ (12,854)

Fair Value Disclosures (Quantit

Fair Value Disclosures (Quantitative Information About Significant Unobservable Inputs Used In Level 3 Fair Value Measurements) (Details) $ in Thousands	6 Months Ended	11 Months Ended
	May 31, 2019USD ($)	Nov. 30, 2018USD ($)	May 31, 2019	May 31, 2019$ / shares	May 31, 2019€ / Bond	May 31, 2019$ / Bond	Nov. 30, 2018	Nov. 30, 2018$ / shares	Nov. 30, 2018€ / Bond	Nov. 30, 2018$ / Bond
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Securities purchased under agreements to resell | $	$ 4,027,332	$ 2,785,758
Derivative assets | $	356,499	166,775
Derivative liability | $	554,243	1,127,653
Long-term debt, fair value | $	819,509	686,170
Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative assets | $	8,414	5,922
Derivative liability | $	55,863	27,536
Long-term debt, fair value | $	236,562	200,745
Level 3 | Price | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Long-term debt, measurement input					78	83			68	78
Level 3 | Price | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Long-term debt, measurement input					107	100			110	94
Level 3 | Price | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Long-term debt, measurement input					94	92			96	86
Level 3 | Corporate equity securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	53,000
Level 3 | Non-exchange-traded securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $		43,644
Level 3 | Non-exchange-traded securities | Price | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				3				1
Level 3 | Non-exchange-traded securities | Price | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				85				75
Level 3 | Non-exchange-traded securities | Price | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				55				12
Level 3 | Non-exchange-traded securities | Transaction level
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares								47
Level 3 | Non-exchange-traded securities | Underlying stock price | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				3
Level 3 | Non-exchange-traded securities | Underlying stock price | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				13
Level 3 | Non-exchange-traded securities | Underlying stock price | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				10
Level 3 | Corporate debt securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	8,346	9,484
Level 3 | Corporate debt securities | Price | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						8
Level 3 | Corporate debt securities | Price | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						88
Level 3 | Corporate debt securities | Price | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						57
Level 3 | Corporate debt securities | Transaction level
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							80
Level 3 | Corporate debt securities | Discount rate/yield
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.32
Level 3 | Corporate debt securities | Estimated recovery percentage
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.49				0.46
Level 3 | CDOs and CLOs
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	25,912	36,105
Level 3 | CDOs and CLOs | Discount rate/yield | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.11				0.11
Level 3 | CDOs and CLOs | Discount rate/yield | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.17				0.16
Level 3 | CDOs and CLOs | Discount rate/yield | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.13				0.14
Level 3 | CDOs and CLOs | Estimated recovery percentage | Scenario analysis | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.02				0.02
Level 3 | CDOs and CLOs | Estimated recovery percentage | Scenario analysis | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.38				0.41
Level 3 | CDOs and CLOs | Estimated recovery percentage | Scenario analysis | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.26				0.23
Level 3 | CDOs and CLOs | Constant prepayment rate | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.10				0.10
Level 3 | CDOs and CLOs | Constant prepayment rate | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.20				0.20
Level 3 | CDOs and CLOs | Constant prepayment rate | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.16				0.18
Level 3 | CDOs and CLOs | Constant default rate | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.01				0.01
Level 3 | CDOs and CLOs | Constant default rate | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.02				0.02
Level 3 | CDOs and CLOs | Constant default rate | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.02				0.02
Level 3 | CDOs and CLOs | Loss severity | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.25				0.25
Level 3 | CDOs and CLOs | Loss severity | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.30				0.30
Level 3 | CDOs and CLOs | Loss severity | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.27				0.26
Level 3 | Residential mortgage-backed securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 17,266	$ 19,603
Level 3 | Residential mortgage-backed securities | Price | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input										100
Level 3 | Residential mortgage-backed securities | Discount rate/yield
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.03
Level 3 | Residential mortgage-backed securities | Discount rate/yield | Discounted cash flows
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							0.03
Level 3 | Residential mortgage-backed securities | Loss severity | Discounted cash flows
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							0
Level 3 | Residential mortgage-backed securities | Cumulative loss rate
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.02
Level 3 | Residential mortgage-backed securities | Cumulative loss rate | Discounted cash flows
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							0.04
Level 3 | Residential mortgage-backed securities | Duration (years)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	7 years
Level 3 | Residential mortgage-backed securities | Duration (years) | Discounted cash flows
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term		13 years
Level 3 | Commercial mortgage-backed securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 12,530	$ 9,444
Level 3 | Commercial mortgage-backed securities | Price | Scenario analysis
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input										49
Level 3 | Commercial mortgage-backed securities | Price | Scenario analysis | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						39
Level 3 | Commercial mortgage-backed securities | Price | Scenario analysis | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						60
Level 3 | Commercial mortgage-backed securities | Price | Scenario analysis | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						50
Level 3 | Commercial mortgage-backed securities | Discount rate/yield | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.03				0.02
Level 3 | Commercial mortgage-backed securities | Discount rate/yield | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.28				0.15
Level 3 | Commercial mortgage-backed securities | Discount rate/yield | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.19				0.06
Level 3 | Commercial mortgage-backed securities | Estimated recovery percentage | Scenario analysis
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							0.26
Level 3 | Commercial mortgage-backed securities | Estimated recovery percentage | Scenario analysis | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.12
Level 3 | Commercial mortgage-backed securities | Estimated recovery percentage | Scenario analysis | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.83
Level 3 | Commercial mortgage-backed securities | Estimated recovery percentage | Scenario analysis | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.47
Level 3 | Commercial mortgage-backed securities | Loss severity | Discounted cash flows
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input							0.64
Level 3 | Commercial mortgage-backed securities | Cumulative loss rate | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.08				0.08
Level 3 | Commercial mortgage-backed securities | Cumulative loss rate | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.86				0.85
Level 3 | Commercial mortgage-backed securities | Cumulative loss rate | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.32				0.45
Level 3 | Commercial mortgage-backed securities | Duration (years) | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	0 years	1 year
Level 3 | Commercial mortgage-backed securities | Duration (years) | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year	3 years
Level 3 | Commercial mortgage-backed securities | Duration (years) | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year	1 year
Level 3 | Other asset-backed securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 43,185	$ 53,175
Level 3 | Other asset-backed securities | Price | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						100				100
Level 3 | Other asset-backed securities | Discount rate/yield | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.05				0.06
Level 3 | Other asset-backed securities | Discount rate/yield | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.12				0.12
Level 3 | Other asset-backed securities | Discount rate/yield | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.12				0.08
Level 3 | Other asset-backed securities | Cumulative loss rate | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.11				0.12
Level 3 | Other asset-backed securities | Cumulative loss rate | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.31				0.30
Level 3 | Other asset-backed securities | Cumulative loss rate | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.20				0.22
Level 3 | Other asset-backed securities | Duration (years) | Discounted cash flows | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year	1 year
Level 3 | Other asset-backed securities | Duration (years) | Discounted cash flows | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	2 years	2 years
Level 3 | Other asset-backed securities | Duration (years) | Discounted cash flows | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year	1 year
Level 3 | Loans and other receivables
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 98,484	$ 46,078
Level 3 | Loans and other receivables | Price | Market approach | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						50				50
Level 3 | Loans and other receivables | Price | Market approach | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						101				100
Level 3 | Loans and other receivables | Price | Market approach | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						91				96
Level 3 | Loans and other receivables | Estimated recovery percentage | Scenario analysis | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.13				0.13
Level 3 | Loans and other receivables | Estimated recovery percentage | Scenario analysis | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			1.17				1.17
Level 3 | Loans and other receivables | Estimated recovery percentage | Scenario analysis | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			1.05				1.05
Level 3 | Loans and other receivables | Estimated recovery percentage | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.01
Level 3 | Loans and other receivables | Comparable price | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input						33
Level 3 | Derivatives
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative assets | $	8,414	4,602
Derivative liability | $	55,863	27,536
Level 3 | Derivatives | Price | Interest rate swaps | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input										20
Level 3 | Derivatives | Price | Total return swaps
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input										97
Level 3 | Derivatives | Price | Total return swaps | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input										97
Level 3 | Derivatives | Volatility | Equity options | Volatility benchmarking | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			0.03				0.39
Level 3 | Derivatives | Volatility | Equity options | Volatility benchmarking | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			0.63				0.62
Level 3 | Derivatives | Volatility | Equity options | Volatility benchmarking | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			0.46				0.50
Level 3 | Derivatives | Default probability | Equity options | Option model/default rate
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input							0
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input						0
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input						12
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative asset, measurement input						5
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Market approach | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			0
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Market approach | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			21
Level 3 | Derivatives | Basis points upfront | Interest rate swaps | Market approach | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Derivative liability, measurement input			12
Level 3 | Private equity securities
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 341,690	$ 368,231
Level 3 | Private equity securities | Price | Market approach | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				169				3
Level 3 | Private equity securities | Price | Market approach | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				250				250
Level 3 | Private equity securities | Price | Market approach | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares				229				108
Level 3 | Private equity securities | Transaction level | Market approach
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input | $ / shares								169
Level 3 | Private equity securities | Discount rate/yield | Scenario analysis
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.20				0.20
Level 3 | Private equity securities | Duration (years) | Contingent claims analysis
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	6 months	4 years
Level 3 | Private equity securities | Revenue growth | Scenario analysis
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0				0
Level 3 | Private equity securities | Volatility | Contingent claims analysis | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.25				0.25
Level 3 | Private equity securities | Volatility | Contingent claims analysis | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.35				0.35
Level 3 | Private equity securities | Volatility | Contingent claims analysis | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input			0.30				0.30
Level 3 | FXCM term loan
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, fair value | $	$ 56,600	$ 73,150
Level 3 | FXCM term loan | Term based on the pay off (years) | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	0 months	0 months
Level 3 | FXCM term loan | Term based on the pay off (years) | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year 8 months	4 months
Level 3 | FXCM term loan | Term based on the pay off (years) | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Trading assets, measurement input, term	1 year 8 months 12 days	9 days
Level 3 | Securities purchased under agreements to resell
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Securities purchased under agreements to resell | $	$ 25,000
Level 3 | Securities purchased under agreements to resell | Duration (years)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Securities purchased under agreements to resell, measurement input, term	2 years
Level 3 | Securities purchased under agreements to resell | Spread to 6 month LIBOR
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Securities purchased under agreements to resell, measurement input			500
Level 3 | Loans
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt instrument, fair value | $	$ 9,428	$ 6,376
Level 3 | Loans | Price | Minimum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt instrument, measurement input						50				50
Level 3 | Loans | Price | Maximum
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt instrument, measurement input						80				101
Level 3 | Loans | Price | Weighted Average
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Debt instrument, measurement input						66				74

Fair Value Disclosures (Summary

Fair Value Disclosures (Summary Of Gains (Losses) Due To Changes In Instrument Specific Credit Risk For Loans and Other Receivables And Loan Commitments Measured At Fair Value Under Fair Value Option) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Trading Assets
Financial Instruments [Line Items]
Loans and other receivables	$ (2,352)	$ (8,754)	$ (3,072)	$ (6,428)
Trading Liabilities
Financial Instruments [Line Items]
Loans	0	1	0	260
Loan commitments	(757)	26	(678)	(103)
Long-term debt
Financial Instruments [Line Items]
Changes in instrument specific credit risk	4,009	34,787	27,492	18,585
Other changes in fair value	(36,665)	(175)	(47,308)	40,979
Short-term Borrowings
Financial Instruments [Line Items]
Changes in instrument specific credit risk	0	27	0	27
Other changes in fair value	$ 0	$ 1,636	$ 0	$ 1,636

Fair Value Disclosures (Summa_2

Fair Value Disclosures (Summary Of Amount By Which Contractual Principal Exceeds Fair Value For Loans And Other Receivables Measured At Fair Value Under Fair Value Option) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Fair Value Disclosures [Abstract]
Loans and other receivables	$ 878,221	$ 961,554
Loans and other receivables on nonaccrual status and/or 90 days or greater past due	141,474	158,392
Long-term Debt	95,079	114,669
All loans and other receivables 90 days or greater past due	$ 18,700	$ 20,500

Fair Value Disclosures (Fair Va

Fair Value Disclosures (Fair Value Option Election Narrative) (Details) $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended
	May 31, 2019USD ($)directorshares	Jun. 30, 2018USD ($)	May 31, 2019USD ($)directorshares	Jun. 30, 2018USD ($)	Nov. 30, 2018USD ($)	Jul. 13, 2018	Dec. 31, 2017shares
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Financial instruments owned trading assets, at fair value	$ 17,178,584		$ 17,178,584		$ 17,463,256
Jefferies Group
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Loans and other receivables on nonaccrual status and/or 90 days or greater past due	119,500		119,500		105,300
Loans and other receivables 90 days or greater past due	65,200		65,200		19,400
HRG
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Cash consideration paid for shares	475,600		475,600
Spectrum Brands
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Financial instruments owned trading assets, at fair value	$ 395,800		$ 395,800		$ 371,100
Number of directors appointed by Company | director	1		1
HRG Group/Spectrum Brands Holdings, Inc.
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Changes in fair value of investments reflected as principal transactions	$ (11,300)	$ (158,400)	$ 24,700	$ (179,900)
HRG
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Shares owned, number | shares							46.6
Percentage of outstanding common stock owned							23.00%
Ownership percentage							23.00%
Spectrum Brands
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Shares owned, number | shares	7.5		7.5
Ownership percentage	15.00%		15.00%			14.00%
Spectrum Brands | HRG
Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Ownership percentage						62.00%

Derivative Financial Instrume_3

Derivative Financial Instruments (Fair Value And Related Number Of Derivative Contracts Categorized By Predominant Risk Exposure) (Details) $ in Thousands	May 31, 2019USD ($)Contract	Nov. 30, 2018USD ($)Contract
Derivatives, Fair Value [Line Items]
Net Amounts in Consolidated Statements of Financial Condition	$ 356,499	$ 166,775
Net Amounts in Consolidated Statements of Financial Condition	554,243	1,127,653
Designated as Accounting Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	13,348	0
Fair Value, Liabilities	0	29,647
Not Designated as Accounting Hedges
Derivatives, Fair Value [Line Items]
Fair Value, Assets	2,540,914	2,580,706
Fair Value, Liabilities	2,924,251	3,611,056
Exchange-traded
Derivatives, Fair Value [Line Items]
Fair Value, Assets	628,487	1,231,525
Fair Value, Liabilities	923,508	2,061,924
Amounts offset in Consolidated Statement of Financial Condition, Assets	(603,556)	(1,190,951)
Amounts offset in Consolidated Statement of Financial Condition, Liabilities	(603,556)	(1,190,951)
Exchange-traded | Not Designated as Accounting Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 1,070	$ 924
Number of Contracts, Assets | Contract	41,702	32,159
Fair Value, Liabilities	$ 1,835	$ 513
Number of Contracts, Liabilities | Contract	64,221	66,095
Exchange-traded | Not Designated as Accounting Hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 0	$ 42
Number of Contracts, Assets | Contract	36	538
Fair Value, Liabilities	$ 0	$ 2
Number of Contracts, Liabilities | Contract	59	690
Exchange-traded | Not Designated as Accounting Hedges | Equity contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 621,087	$ 1,202,927
Number of Contracts, Assets | Contract	1,703,475	2,104,684
Fair Value, Liabilities	$ 921,170	$ 2,061,137
Number of Contracts, Liabilities | Contract	1,327,055	1,779,836
Exchange-traded | Not Designated as Accounting Hedges | Commodity contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 6,330	$ 27,632
Number of Contracts, Assets | Contract	6,492	7,272
Fair Value, Liabilities	$ 503	$ 272
Number of Contracts, Liabilities | Contract	6,904	4,185
Cleared OTC
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 914,140	$ 433,874
Fair Value, Liabilities	957,460	443,072
Amounts offset in Consolidated Statement of Financial Condition, Assets	(897,715)	(407,351)
Amounts offset in Consolidated Statement of Financial Condition, Liabilities	(902,183)	(418,779)
Cleared OTC | Designated as Accounting Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 13,348	$ 0
Number of Contracts, Assets | Contract	1	0
Fair Value, Liabilities	$ 0	$ 29,647
Number of Contracts, Liabilities | Contract	0	1
Cleared OTC | Not Designated as Accounting Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 897,615	$ 422,670
Number of Contracts, Assets | Contract	2,907	2,095
Fair Value, Liabilities	$ 952,865	$ 411,833
Number of Contracts, Liabilities | Contract	3,360	2,394
Cleared OTC | Not Designated as Accounting Hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets		$ 0
Number of Contracts, Assets | Contract		0
Fair Value, Liabilities		$ 36
Number of Contracts, Liabilities | Contract		3
Cleared OTC | Not Designated as Accounting Hedges | Credit contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 3,177	$ 11,204
Number of Contracts, Assets | Contract	24	7
Fair Value, Liabilities	$ 4,595	$ 1,556
Number of Contracts, Liabilities | Contract	24	14
Bilateral OTC
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 1,011,635	$ 915,307
Fair Value, Liabilities	1,043,283	1,135,707
Amounts offset in Consolidated Statement of Financial Condition, Assets	(696,492)	(815,629)
Amounts offset in Consolidated Statement of Financial Condition, Liabilities	(864,269)	(903,320)
Bilateral OTC | Not Designated as Accounting Hedges | Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 405,268	$ 372,899
Number of Contracts, Assets | Contract	2,002	1,398
Fair Value, Liabilities	$ 239,880	$ 491,697
Number of Contracts, Liabilities | Contract	752	816
Bilateral OTC | Not Designated as Accounting Hedges | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 400,432	$ 311,228
Number of Contracts, Assets | Contract	12,320	9,548
Fair Value, Liabilities	$ 412,485	$ 314,951
Number of Contracts, Liabilities | Contract	12,544	9,909
Bilateral OTC | Not Designated as Accounting Hedges | Equity contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 166,068	$ 207,221
Number of Contracts, Assets | Contract	3,195	5,126
Fair Value, Liabilities	$ 374,665	$ 315,996
Number of Contracts, Liabilities | Contract	3,835	2,764
Bilateral OTC | Not Designated as Accounting Hedges | Commodity contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 30,792	$ 10,191
Number of Contracts, Assets | Contract	2,283	1,274
Fair Value, Liabilities	$ 4,355	$ 1,445
Number of Contracts, Liabilities | Contract	1,787	1,498
Bilateral OTC | Not Designated as Accounting Hedges | Credit contracts
Derivatives, Fair Value [Line Items]
Fair Value, Assets	$ 9,075	$ 13,768
Number of Contracts, Assets | Contract	98	123
Fair Value, Liabilities	$ 11,898	$ 11,618
Number of Contracts, Liabilities | Contract	58	79

Derivative Financial Instrume_4

Derivative Financial Instruments (Unrealized And Realized Gains (Losses) On Derivative Contracts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in Interest expense on fair value hedge	$ (1,009)	$ 139	$ (1,978)	$ 1,633
Unrealized and realized gains (losses)	(97,982)	(51,149)	(211,648)	(232,510)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	(34,020)	(4,860)	(103,851)	22,102
Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	2,284	8,390	2,108	11,518
Equity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	(92,109)	(45,419)	(120,590)	(250,565)
Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	21,045	(10,991)	1,772	(16,305)
Credit contracts
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	4,818	1,731	8,913	740
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in Interest expense on fair value hedge	27,204	19	41,791	(21,202)
Long-term Debt
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in Interest expense on fair value hedge	$ (28,213)	$ 120	$ (43,769)	$ 22,835

Derivative Financial Instrume_5

Derivative Financial Instruments (Remaining Contract Maturity Of Fair Value Of OTC Derivative Assets And Liabilities) (Details) $ in Thousands	May 31, 2019USD ($)
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	$ 194,673
OTC derivative assets having maturity period of 1 to 5 years	259,658
OTC derivative assets having maturity period of greater than 5 years	124,949
OTC derivative assets cross-maturity netting	(94,678)
Total OTC derivative assets, net of cross-maturity netting	484,602
Cross product counterparty netting	(39,313)
Total OTC derivative assets included in Trading assets	445,289
OTC derivative liabilities having maturity period of 0 to 12 months	234,523
OTC derivative liabilities having maturity period of 1 to 5 years	259,998
OTC derivative liabilities having maturity period of greater than 5 years	161,590
OTC derivative liabilities cross-maturity netting	(94,678)
Total OTC derivative liabilities, net of cross-maturity netting	561,433
Cross product counterparty netting	(39,313)
Total OTC derivative liabilities included in Trading liabilities	522,120
Exchange traded derivative assets and other credit agreements	28,300
Cash collateral received	117,100
Exchange traded derivative liabilities and other credit agreements	321,400
Cash collateral pledged	289,300
Commodity swaps, options and forwards
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	15,034
OTC derivative assets having maturity period of 1 to 5 years	15,758
OTC derivative assets having maturity period of greater than 5 years	0
OTC derivative assets cross-maturity netting	(4,355)
Total OTC derivative assets, net of cross-maturity netting	26,437
OTC derivative liabilities having maturity period of 0 to 12 months	1,986
OTC derivative liabilities having maturity period of 1 to 5 years	2,369
OTC derivative liabilities having maturity period of greater than 5 years	0
OTC derivative liabilities cross-maturity netting	(4,355)
Total OTC derivative liabilities, net of cross-maturity netting	0
Equity swaps and options
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	40,703
OTC derivative assets having maturity period of 1 to 5 years	26
OTC derivative assets having maturity period of greater than 5 years	4,031
OTC derivative assets cross-maturity netting	(2,233)
Total OTC derivative assets, net of cross-maturity netting	42,527
OTC derivative liabilities having maturity period of 0 to 12 months	28,465
OTC derivative liabilities having maturity period of 1 to 5 years	118,560
OTC derivative liabilities having maturity period of greater than 5 years	40,591
OTC derivative liabilities cross-maturity netting	(2,233)
Total OTC derivative liabilities, net of cross-maturity netting	185,383
Credit default swaps
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	807
OTC derivative assets having maturity period of 1 to 5 years	966
OTC derivative assets having maturity period of greater than 5 years	2,294
OTC derivative assets cross-maturity netting	(469)
Total OTC derivative assets, net of cross-maturity netting	3,598
OTC derivative liabilities having maturity period of 0 to 12 months	40
OTC derivative liabilities having maturity period of 1 to 5 years	2,535
OTC derivative liabilities having maturity period of greater than 5 years	3,583
OTC derivative liabilities cross-maturity netting	(469)
Total OTC derivative liabilities, net of cross-maturity netting	5,689
Total return swaps
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	9,675
OTC derivative assets having maturity period of 1 to 5 years	51,481
OTC derivative assets having maturity period of greater than 5 years	0
OTC derivative assets cross-maturity netting	(1,607)
Total OTC derivative assets, net of cross-maturity netting	59,549
OTC derivative liabilities having maturity period of 0 to 12 months	89,603
OTC derivative liabilities having maturity period of 1 to 5 years	37,003
OTC derivative liabilities having maturity period of greater than 5 years	0
OTC derivative liabilities cross-maturity netting	(1,607)
Total OTC derivative liabilities, net of cross-maturity netting	124,999
Foreign currency forwards, swaps and options
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	53,115
OTC derivative assets having maturity period of 1 to 5 years	21,850
OTC derivative assets having maturity period of greater than 5 years	0
OTC derivative assets cross-maturity netting	(15,480)
Total OTC derivative assets, net of cross-maturity netting	59,485
OTC derivative liabilities having maturity period of 0 to 12 months	67,386
OTC derivative liabilities having maturity period of 1 to 5 years	18,225
OTC derivative liabilities having maturity period of greater than 5 years	1,404
OTC derivative liabilities cross-maturity netting	(15,480)
Total OTC derivative liabilities, net of cross-maturity netting	71,535
Fixed income forwards
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative liabilities having maturity period of 0 to 12 months	600
OTC derivative liabilities having maturity period of 1 to 5 years	0
OTC derivative liabilities having maturity period of greater than 5 years	0
OTC derivative liabilities cross-maturity netting	0
Total OTC derivative liabilities, net of cross-maturity netting	600
Interest rate swaps
Remaining Contract Maturity Of Fair Value Of Over Counter Derivative Assets And Liabilities [Line Items]
OTC derivative assets having maturity period of 0 to 12 months	75,339
OTC derivative assets having maturity period of 1 to 5 years	169,577
OTC derivative assets having maturity period of greater than 5 years	118,624
OTC derivative assets cross-maturity netting	(70,534)
Total OTC derivative assets, net of cross-maturity netting	293,006
OTC derivative liabilities having maturity period of 0 to 12 months	46,443
OTC derivative liabilities having maturity period of 1 to 5 years	81,306
OTC derivative liabilities having maturity period of greater than 5 years	116,012
OTC derivative liabilities cross-maturity netting	(70,534)
Total OTC derivative liabilities, net of cross-maturity netting	$ 173,227

Derivative Financial Instrume_6

Derivative Financial Instruments (Counterparty Credit Quality With Respect To Fair Value Of OTC Derivatives Assets) (Details) $ in Thousands	May 31, 2019USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
A- or higher	$ 94,830
BBB- to BBB	24,884
BB or lower	194,336
Unrated	131,239
Total OTC derivative assets included in Trading assets	$ 445,289

Derivative Financial Instrume_7

Derivative Financial Instruments (Credit Related Derivative Contracts) (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Index credit default swaps
Derivative [Line Items]
Notional amount	$ 79	$ 193.1
Single name credit default swaps
Derivative [Line Items]
Notional amount	97.4	145.2
Investment Grade | Index credit default swaps
Derivative [Line Items]
Notional amount	3	25.7
Investment Grade | Single name credit default swaps
Derivative [Line Items]
Notional amount	14.1	57.7
Non-investment grade | Index credit default swaps
Derivative [Line Items]
Notional amount	76	167.4
Non-investment grade | Single name credit default swaps
Derivative [Line Items]
Notional amount	50.4	84.5
Unrated | Index credit default swaps
Derivative [Line Items]
Notional amount	0	0
Unrated | Single name credit default swaps
Derivative [Line Items]
Notional amount	$ 32.9	$ 3

Derivative Financial Instrume_8

Derivative Financial Instruments (Contingent Features) (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative instrument liabilities with credit-risk-related contingent features	$ 41.1	$ 93.5
Collateral posted	(11.6)	(61.5)
Collateral received	30.5	91.5
Return of and additional collateral required in the event of a credit rating downgrade below investment grade	$ 59.9	$ 123.3

Collateralized Transactions (Co

Collateralized Transactions (Collateral Pledged) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	$ 2,327,805	$ 1,838,688
Repurchase agreements	21,093,190	17,193,486
Total	23,420,995	19,032,174
Corporate equity securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	2,006,944	1,505,218
Repurchase agreements	391,858	487,124
Total	2,398,802	1,992,342
Corporate debt securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	252,023	333,221
Repurchase agreements	1,826,868	1,853,309
Total	2,078,891	2,186,530
Mortgage- and asset-backed securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	0	249
Repurchase agreements	2,077,535	2,820,543
Total	2,077,535	2,820,792
U.S. government and federal agency securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	68,838	0
Repurchase agreements	12,234,328	8,181,947
Total	12,303,166	8,181,947
Municipal securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	0	0
Repurchase agreements	612,747	604,274
Total	612,747	604,274
Sovereign obligations
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	0	0
Repurchase agreements	3,184,103	2,945,521
Total	3,184,103	2,945,521
Loans and other receivables
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	0	0
Repurchase agreements	765,751	300,768
Total	$ 765,751	$ 300,768

Collateralized Transactions (_2

Collateralized Transactions (Contractual Maturity) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	$ 2,327,805	$ 1,838,688
Repurchase agreements	21,093,190	17,193,486
Total	23,420,995	19,032,174
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	1,382,312	807,347
Repurchase agreements	8,754,902	7,849,052
Total	10,137,214	8,656,399
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	0	0
Repurchase agreements	3,154,270	1,915,325
Total	3,154,270	1,915,325
30 to 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	644,948	560,417
Repurchase agreements	4,402,247	6,042,951
Total	5,047,195	6,603,368
Greater than 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Securities lending arrangements	300,545	470,924
Repurchase agreements	4,781,771	1,386,158
Total	$ 5,082,316	$ 1,857,082

Collateralized Transactions (Na

Collateralized Transactions (Narrative) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Collateralized Transactions [Abstract]
Fair value of securities received as collateral that may be sold or repledged	$ 29,400,000	$ 23,100,000
Cash and securities segregated and on deposit for regulatory purposes or deposited with clearing and depository organizations	$ 543,429	$ 707,960

Collateralized Transactions (Of

Collateralized Transactions (Offsetting of Securities Financing Agreements) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Securities borrowing arrangements, Assets
Gross Amounts	$ 7,713,886	$ 6,538,212
Netting in Consolidated Statements of Financial Condition	0	0
Net Amounts in Consolidated Statements of Financial Condition	7,713,886	6,538,212
Additional Amounts Available for Setoff	(570,248)	(468,778)
Available Collateral	(1,585,821)	(1,193,986)
Net Amount	5,557,817	4,875,448
Reverse repurchase agreements, Assets
Gross Amounts	16,259,065	11,336,175
Netting in Consolidated Statements of Financial Condition	(12,231,733)	(8,550,417)
Net Amounts in Consolidated Statements of Financial Condition	4,027,332	2,785,758
Additional Amounts Available for Setoff	(526,433)	(609,225)
Available Collateral	(3,452,962)	(2,126,730)
Net Amount	47,937	49,803
Securities lending arrangements, Liabilities
Gross Amounts	2,327,805	1,838,688
Netting in Consolidated Statements of Financial Condition	0	0
Net Amounts in Consolidated Statements of Financial Condition	2,327,805	1,838,688
Additional Amounts Available for Setoff	(570,248)	(468,778)
Available Collateral	(1,694,029)	(1,343,704)
Net Amount	63,528	26,206
Repurchase agreements, Liabilities
Gross Amounts	21,093,190	17,193,486
Netting in Consolidated Statements of Financial Condition	(12,231,733)	(8,550,417)
Net Amounts in Consolidated Statements of Financial Condition	8,861,457	8,643,069
Additional Amounts Available for Setoff	(526,433)	(609,225)
Available Collateral	(7,103,993)	(7,070,967)
Net Amount	1,231,031	962,877
Securities borrowing agreement, subject to review	5,469,000	4,825,700
Securities borrowing agreement, collateral received, subject to review	5,273,800	4,711,700
Repurchase agreement, net amount, subject to review	1,119,300	931,700
Repurchase agreements, collateral pledged, subject to review	$ 1,147,800	$ 963,600

Securitization Activities (Acti

Securitization Activities (Activity Related To Securitizations Accounted For As Sales) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Securitization Activities [Abstract]
Transferred assets	$ 844.5	$ 1,042.6	$ 2,105.1	$ 3,800.3
Proceeds on new securitizations	845.8	1,043.4	2,177	3,802.3
Cash flows received on retained interests	$ 24.3	$ 7.8	$ 36.6	$ 23.8

Securitization Activities (Summ

Securitization Activities (Summary Of Retained Interests In SPEs) (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Residential mortgage-backed securities
Securitization Activities [Line Items]
U.S. government agency residential mortgage-backed securities	$ 12,886.5	$ 13,633.5
Retained Interests	121.5	365.3
Commercial mortgage-backed securities
Securitization Activities [Line Items]
U.S. government agency commercial mortgage-backed securities	1,374.9	2,027.6
Retained Interests	48.3	185.6
CLOs
Securitization Activities [Line Items]
CLOs	4,943.3	3,512
Retained Interests	56.9	20.9
Consumer and other loans
Securitization Activities [Line Items]
Consumer and other loans	657.1	604.1
Retained Interests	$ 44.8	$ 48.9

Available for Sale Securities_3

Available for Sale Securities and Other Investments (Amortized Cost, Gross Unrealized Gains and Losses and Estimated Fair Value of Available for Sale Investments) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Schedule of Investments [Line Items]
Amortized Cost		$ 1,411,762
Gross Unrealized Gains		378
Gross Unrealized Losses		2,254
Estimated Fair Value	$ 0	1,409,886
U.S. government securities
Schedule of Investments [Line Items]
Amortized Cost		1,073,038
Gross Unrealized Gains		1
Gross Unrealized Losses		183
Estimated Fair Value		1,072,856
Residential mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost		211,209
Gross Unrealized Gains		376
Gross Unrealized Losses		1,067
Estimated Fair Value		210,518
Commercial mortgage-backed securities
Schedule of Investments [Line Items]
Amortized Cost		16,068
Gross Unrealized Gains		0
Gross Unrealized Losses		426
Estimated Fair Value		15,642
Other asset-backed securities
Schedule of Investments [Line Items]
Amortized Cost		111,447
Gross Unrealized Gains		1
Gross Unrealized Losses		578
Estimated Fair Value		$ 110,870

Available for Sale Securities_4

Available for Sale Securities and Other Investments (Additional Information) (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Other investment not readily marketable, fair value	$ 210.1	$ 230

Variable Interest Entities (Ass

Variable Interest Entities (Assets And Liabilities Of Consolidated VIEs) (Details) - USD ($) $ in Thousands		May 31, 2019	Nov. 30, 2018
Variable Interest Entity [Line Items]
Securities purchased under agreement to resell		$ 4,027,332	$ 2,785,758
Receivables		6,911,314	6,287,401
Other		1,985,328	1,859,561
Total assets	[1]	48,523,940	47,131,095
Other secured financings		1,799,569	1,534,271
Total liabilities	[1]	38,502,641	36,907,059
Jefferies Group
Variable Interest Entity [Line Items]
Secured financings eliminated in consolidation			1,000
Consolidation adjustments
Variable Interest Entity [Line Items]
Intercompany payables		41,500	44,100
Securitization Vehicles
Variable Interest Entity [Line Items]
Securities purchased under agreement to resell		1,266,900	883,100
Receivables		549,900	626,000
Other		36,200	78,400
Total assets		1,853,000	1,587,500
Other secured financings		1,798,900	1,535,300
Other		43,500	45,900
Total liabilities		$ 1,842,400	$ 1,581,200
[1]	Total assets include assets related to variable interest entities of $587.6 million and $704.4 million at May 31, 2019 and November 30, 2018 , respectively, and Total liabilities include liabilities related to variable interest entities of $1,800.9 million and $1,535.8 million at May 31, 2019 and November 30, 2018 , respectively. See Note 8 for additional information related to variable interest entities.

Variable Interest Entities (Non

Variable Interest Entities (Nonconsolidated VIEs) (Details) - USD ($) $ in Millions	May 31, 2019	Nov. 30, 2018
Variable Interest Entity [Line Items]
Financial Statement Carrying Amount, Assets	$ 1,080.4	$ 746.4
Financial Statement Carrying Amount, Liabilities	0.6	0
Maximum Exposure to Loss	1,976.6	1,646.7
VIE Assets	19,539	12,382.4
CLOs
Variable Interest Entity [Line Items]
Financial Statement Carrying Amount, Assets	114.9	45.2
Financial Statement Carrying Amount, Liabilities	0.6	0
Maximum Exposure to Loss	830.7	571.4
VIE Assets	7,980.2	3,281.9
Consumer loan and other asset-backed vehicles
Variable Interest Entity [Line Items]
Financial Statement Carrying Amount, Assets	427.3	462.1
Financial Statement Carrying Amount, Liabilities	0	0
Maximum Exposure to Loss	570.1	807.1
VIE Assets	3,322.6	3,273.1
Related party private equity vehicles
Variable Interest Entity [Line Items]
Financial Statement Carrying Amount, Assets	31.2	35.5
Financial Statement Carrying Amount, Liabilities	0	0
Maximum Exposure to Loss	49	53.5
VIE Assets	92	108.3
Other investment vehicles
Variable Interest Entity [Line Items]
Financial Statement Carrying Amount, Assets	507	203.6
Financial Statement Carrying Amount, Liabilities	0	0
Maximum Exposure to Loss	526.8	214.7
VIE Assets	$ 8,144.2	$ 5,719.1

Variable Interest Entities (Nar

Variable Interest Entities (Narrative) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Carrying Amount	$ 1,080,400	$ 746,400
Investment in associated company	2,415,894	2,417,332	$ 2,522,944	$ 2,066,829
Other investment vehicles
Variable Interest Entity [Line Items]
Unfunded equity commitment related to investments	19,800	11,100
Carrying Amount	507,000	203,600
Agency Mortgage-Backed Securitizations
Variable Interest Entity [Line Items]
Carrying Amount	1,525,100	2,913,000
Nonagency Mortgage- And Asset-Backed Securitizations
Variable Interest Entity [Line Items]
Carrying Amount	34,700	170,500
JCP Entities | Private Equity Vehicles
Variable Interest Entity [Line Items]
Equity commitments	139,300	139,300
Funded equity commitments	121,500	121,300
Carrying amount of equity investment	31,200	$ 35,500
FXCM
Variable Interest Entity [Line Items]
Fair value of senior secured term loan receivable	56,600
Investment in associated company	70,000
Senior secured term loan receivable and investments in associated companies	$ 126,600

Loans to and Investments In A_3

Loans to and Investments In Associated Companies (Schedule Of Loans to and Investments In Associated Companies) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Jun. 30, 2018	May 31, 2019	Sep. 30, 2018	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			$ 2,522,944		$ 2,417,332	$ 2,066,829
Income (losses) related to associated companies		$ 22,170		$ 33,353	49,483	65,453
Income (losses) related to Jefferies associated companies		42,984		19,229	54,321	24,834
Contributions to (distributions from) associated companies, net					(102,666)	(47,276)
Other					(2,576)	413,104
Loans to and investments in associated companies, ending balance	$ 2,522,944	2,415,894		2,522,944	2,415,894	2,522,944
Jefferies Finance
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			717,494		728,560	655,467
Income (losses) related to associated companies					0	0
Income (losses) related to Jefferies associated companies		14,935		20,733	7,936	30,566
Contributions to (distributions from) associated companies, net					(63,070)	31,461
Other					0	0
Loans to and investments in associated companies, ending balance	717,494	673,426		717,494	673,426	717,494
Berkadia
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			243,763		245,228	210,594
Income (losses) related to associated companies		0		25,461	0	51,742
Income (losses) related to Jefferies associated companies		25,296		0	47,945	0
Contributions to (distributions from) associated companies, net					(18,124)	(17,853)
Other					515	(720)
Loans to and investments in associated companies, ending balance	243,763	275,564		243,763	275,564	243,763
National Beef
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			603,541		653,630	0
Income (losses) related to associated companies	24,400	34,946		24,401	62,051	24,401
Income (losses) related to Jefferies associated companies					0	0
Contributions to (distributions from) associated companies, net					(54,940)	(13,099)
Other					(9)	592,239
Loans to and investments in associated companies, ending balance	603,541	660,732		603,541	660,732	603,541
FXCM
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			143,782		75,031	158,856
Income (losses) related to associated companies		(2,300)		(6,816)	(5,016)	(15,040)
Income (losses) related to Jefferies associated companies					0	0
Contributions to (distributions from) associated companies, net					0	0
Other					10	(34)
Loans to and investments in associated companies, ending balance	143,782	70,025		143,782	70,025	143,782
Garcadia companies
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			0			179,143
Income (losses) related to associated companies		0		9,572	0	20,955
Income (losses) related to Jefferies associated companies						0
Contributions to (distributions from) associated companies, net						(22,915)
Other						(177,183)
Loans to and investments in associated companies, ending balance	0			0		0
Linkem
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			177,593		165,157	192,136
Income (losses) related to associated companies		(6,960)		(5,309)	(8,581)	(12,764)
Income (losses) related to Jefferies associated companies					0	0
Contributions to (distributions from) associated companies, net					49,590	542
Other					(3,973)	(2,321)
Loans to and investments in associated companies, ending balance	177,593	202,193		177,593	202,193	177,593
HomeFed
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			346,319		337,542	341,874
Income (losses) related to associated companies		(2,500)		(7,165)	(517)	4,445
Income (losses) related to Jefferies associated companies					0	0
Contributions to (distributions from) associated companies, net					0	0
Other					0	0
Loans to and investments in associated companies, ending balance	346,319	337,025		346,319	337,025	346,319
Other
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Loans to and investments in associated companies, beginning balance			$ 290,452		212,184	328,759
Income (losses) related to associated companies		(1,016)		(6,791)	1,546	(8,286)
Income (losses) related to Jefferies associated companies		2,753		(1,504)	(1,560)	(5,732)
Contributions to (distributions from) associated companies, net					(16,122)	(25,412)
Other					881	1,123
Loans to and investments in associated companies, ending balance	$ 290,452	$ 196,929		$ 290,452	$ 196,929	$ 290,452
Disposal group, disposed of by sale, not discontinued operations | Garcadia companies
Loans to and Investments in Associated Companies Rollforward [Roll Forward]
Percentage of equity method investment for sale			100.00%

Loans to and Investments In A_4

Loans to and Investments In Associated Companies (Jefferies Finance) (Narrative) (Details) - USD ($)	May 15, 2019	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Mar. 28, 2019	Nov. 30, 2018
Investments In Associated Companies [Line Items]
Other		$ 1,985,328,000		$ 1,985,328,000			$ 1,859,561,000
Payables, expense accruals and other liabilities		7,029,001,000		7,029,001,000			7,407,030,000
Trading liabilities, at fair value		10,113,390,000		10,113,390,000			9,478,946,000
Interest expense		23,138,000	$ 24,279,000	46,156,000	$ 45,777,000
Jefferies Group
Investments In Associated Companies [Line Items]
Interest income and unfunded commitment fees related to facility commitment		300,000	700,000	600,000	1,700,000
Investment banking		69,300,000	109,600,000	91,200,000	211,000,000
Origination fees		8,200,000	14,900,000	13,600,000	33,400,000
Placement agent fees		0	2,400,000	1,300,000	2,700,000
Underwriting fees income		1,000,000		1,000,000
Service fee income		11,200,000	8,900,000	38,300,000	35,000,000
Interest expense		$ 408,714,000	$ 332,667,000	$ 775,283,000	$ 598,343,000
Jefferies Finance
Investments In Associated Companies [Line Items]
Equity method investment, ownership percentage		50.00%		50.00%
Equity commitment		$ 750,000,000		$ 750,000,000
Funded equity commitments		643,700,000		$ 643,700,000
Investment commitment extension				1 year
Termination notice				60 days
Total line of credit facility commitment under joint venture		500,000,000		$ 500,000,000			500,000,000
Extension period				1 year
Line of credit facility, commitment of Jefferies, funded		0		$ 0			0
Line of credit facility commitment of Jefferies		250,000,000		250,000,000			250,000,000
Other		20,400,000		20,400,000			35,200,000
Payables, expense accruals and other liabilities		13,700,000		13,700,000			14,100,000
Foreign exchange contracts | Jefferies Finance
Investments In Associated Companies [Line Items]
Payables, expense accruals and other liabilities							200,000
Trading liabilities, at fair value		$ 100,000		$ 100,000			$ 400,000
Promissory Note | Jefferies Group
Investments In Associated Companies [Line Items]
Debt principal amount						$ 1,000,000,000
Interest expense	$ 3,800,000

Loans to and Investments In A_5

Loans to and Investments In Associated Companies (Berkadia) (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2009	May 31, 2019	Oct. 01, 2018
Berkadia
Investments In Associated Companies [Line Items]
Surety policy issued		$ 1,500,000,000
Reimbursement of losses incurred, maximum percentage		50.00%
Commercial paper		$ 1,470,000,000
Berkadia
Investments In Associated Companies [Line Items]
Capital contributed	$ 217,200,000
Equity method investment, ownership percentage		50.00%	50.00%
Percentage of profits received from joint venture		45.00%
Reimbursement of losses incurred, maximum percentage		50.00%

Loans to and Investments in A_6

Loans to and Investments in Associated Companies (National Beef) (Narrative) (Details)	6 Months Ended
	May 31, 2019	Jun. 05, 2018	Jun. 04, 2018
National Beef
Schedule of Equity Method Investments [Line Items]
Ownership percentage			79.00%
Equity method investment, ownership percentage	31.00%	31.00%
Weighted average useful life	15 years
National Beef | Discontinued operations, disposed of by sale
Schedule of Equity Method Investments [Line Items]
Ownership percentage		48.00%

Loans to and Investments In A_7

Loans to and Investments In Associated Companies (FXCM) (Narrative) (Details) - Investment in FXCM	6 Months Ended
	May 31, 2019
Investments In Associated Companies [Line Items]
Equity method investment, ownership percentage	50.00%
Weighted average useful life	11 years

Loans to and Investments In A_8

Loans to and Investments In Associated Companies (Garcadia) (Narrative) (Details)	3 Months Ended
	Sep. 30, 2018
Garcadia | Disposal group, disposed of by sale, not discontinued operations
Investments In Associated Companies [Line Items]
Percentage of equity method investment for sale	100.00%

Loans to and Investments In A_9

Loans to and Investments In Associated Companies (Linkem) (Narrative) (Details) - Linkem $ in Millions	May 31, 2019USD ($)
Investments In Associated Companies [Line Items]
Equity method investment, ownership percentage	42.00%
Percentage of ownership upon conversion of note	54.00%
Equity method investment, voting percentage	48.00%
Shareholder loans principal outstanding	$ 49.4
Shareholder loans interest rate	5.00%

Loans to and Investments In _10

Loans to and Investments In Associated Companies (HomeFed) (Narrative) (Details)	Jul. 01, 2019shares	May 31, 2019directorshares	Jun. 30, 2019
HomeFed
Investments In Associated Companies [Line Items]
Maximum voting rights as a percentage of total voting securities voting		45.00%
Number of directors appointed by Company | director		3
Company Chairman | HomeFed
Investments In Associated Companies [Line Items]
Ownership percentage of company		5.00%
HomeFed
Investments In Associated Companies [Line Items]
Shares of common stock owned		10,852,123
Equity method investment, ownership percentage		70.00%
Subsequent Event
Investments In Associated Companies [Line Items]
Number of shares authorized to be repurchased	9,250,000
Subsequent Event | HomeFed
Investments In Associated Companies [Line Items]
Equity method investment, ownership percentage			70.00%
Number of shares issued per common stock of acquiree	2
Subsequent Event | HomeFed
Investments In Associated Companies [Line Items]
Number of shares issued	9,300,000

Loans to and Investments in _11

Loans to and Investments in Associated Companies (Other) (Details) - USD ($) $ in Thousands	6 Months Ended
	May 31, 2019	Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Revenues	$ 4,736,971	$ 2,899,221
Income from continuing operations before extraordinary items	360,966	330,849
Net income	$ 360,966	$ 832,349

Intangible Assets, Net and Go_3

Intangible Assets, Net and Goodwill (Schedule of Intangible Assets, Net And Goodwill) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)	$ 181,629	$ 188,291
Goodwill	1,701,301	1,701,840
Total intangible assets, net and goodwill	1,882,930	1,890,131
Other operations
Intangible Assets [Line Items]
Goodwill	3,459	3,459
Jefferies Group
Intangible Assets [Line Items]
Goodwill	1,697,842	1,698,381
Customer and other relationships
Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)	63,691	67,894
Intangibles, accumulated amortization	106,731	102,579
Trademarks and tradename
Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)	105,315	107,262
Intangibles, accumulated amortization	22,895	21,086
Other
Intangible Assets [Line Items]
Intangible assets, net (excluding goodwill)	4,068	4,611
Intangibles, accumulated amortization	4,882	4,339
Exchange and clearing organization membership interests and registrations
Intangible Assets [Line Items]
Indefinite lived intangibles	$ 8,555	$ 8,524

Intangible Assets, Net and Go_4

Intangible Assets, Net and Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense on intangible assets	$ 3.3	$ 3.3	$ 6.6	$ 6.5

Intangible Assets, Net and Go_5

Intangible Assets, Net and Goodwill (Schedule of Estimated Future Amortization Expense) (Details) $ in Thousands	May 31, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of current year	$ 6,719
2020	13,439
2021	13,085
2022	10,110
2023	$ 9,001

Short-Term Borrowings (Details)

Short-Term Borrowings (Details) - USD ($)	6 Months Ended
	May 31, 2019	Dec. 27, 2018	Nov. 30, 2018
Short-term Debt [Line Items]
Short-term borrowings	$ 510,435,000		$ 387,492,000
Interest rates on short-term borrowings outstanding	3.58%		3.08%
Floating rate puttable notes
Short-term Debt [Line Items]
Short-term borrowings	$ 55,845,000		$ 56,550,000
Jefferies Group Credit Facility
Short-term Debt [Line Items]
Credit facility maximum amount		$ 135,000,000
Bank loans
Short-term Debt [Line Items]
Short-term borrowings	454,590,000		$ 330,942,000
Line of Credit | Intraday Credit Facility
Short-term Debt [Line Items]
Credit facility maximum amount	$ 150,000,000
Line of Credit | Intraday Credit Facility | Federal funds effective rate
Short-term Debt [Line Items]
Debt instrument, basic spread on variable rate	0.50%

Long-Term Debt (Schedule Of Ind

Long-Term Debt (Schedule Of Indebtedness) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018
Debt Instrument [Line Items]
Long-term debt	$ 7,860,984		$ 7,860,984		$ 7,617,563
Gain (loss) associated with an interest rate swap based on its designation as a fair value hedge	$ (1,009)	$ 139	$ (1,978)	$ 1,633
8.50% Senior Notes, due July 15, 2019
Debt Instrument [Line Items]
Interest rate	8.50%		8.50%
Parent Company
Debt Instrument [Line Items]
Long-term debt	$ 990,737		$ 990,737		990,116
Parent Company | 5.50% Senior Notes due October 18, 2023
Debt Instrument [Line Items]
Long-term debt	$ 743,993		$ 743,993		$ 743,397
Interest rate	5.50%		5.50%		5.50%
Principal Outstanding	$ 750,000		$ 750,000		$ 750,000
Parent Company | 6.625% Senior Notes due October 23, 2043
Debt Instrument [Line Items]
Long-term debt	$ 246,744		$ 246,744		$ 246,719
Interest rate	6.625%		6.625%		6.625%
Principal Outstanding	$ 250,000		$ 250,000		$ 250,000
Subsidiaries
Debt Instrument [Line Items]
Long-term debt	6,870,247		6,870,247		6,627,447
Subsidiaries | 8.50% Senior Notes, due July 15, 2019
Debt Instrument [Line Items]
Long-term debt	$ 648,382		$ 648,382		$ 699,659
Interest rate	8.50%		8.50%		8.50%
Principal Outstanding	$ 644,800		$ 644,800		$ 680,800
Subsidiaries | 2.375% Euro Medium Term Notes, due May 20, 2020
Debt Instrument [Line Items]
Long-term debt	$ 557,926		$ 557,926		$ 564,702
Interest rate	2.375%		2.375%		2.375%
Principal Outstanding	$ 558,450		$ 558,450		$ 565,500
Subsidiaries | 6.875% Senior Notes, due April 15, 2021
Debt Instrument [Line Items]
Long-term debt	$ 783,370		$ 783,370		$ 791,814
Interest rate	6.875%		6.875%		6.875%
Principal Outstanding	$ 750,000		$ 750,000		$ 750,000
Subsidiaries | 2.25% Euro Medium Term Notes, due July 13, 2022
Debt Instrument [Line Items]
Long-term debt	$ 4,225		$ 4,225		$ 4,243
Interest rate	2.25%		2.25%		2.25%
Principal Outstanding	$ 4,468		$ 4,468		$ 4,524
Subsidiaries | 5.125% Senior Notes, due January 20, 2023
Debt Instrument [Line Items]
Long-term debt	$ 611,492		$ 611,492		$ 612,928
Interest rate	5.125%		5.125%		5.125%
Principal Outstanding	$ 600,000		$ 600,000		$ 600,000
Subsidiaries | 4.85% Senior Notes, due January 15, 2027
Debt Instrument [Line Items]
Long-term debt	$ 753,509		$ 753,509		$ 709,484
Interest rate	4.85%		4.85%		4.85%
Principal Outstanding	$ 750,000		$ 750,000		$ 750,000
Subsidiaries | 6.45% Senior Debentures, due June 8, 2027
Debt Instrument [Line Items]
Long-term debt	$ 372,563		$ 372,563		$ 373,669
Interest rate	6.45%		6.45%		6.45%
Principal Outstanding	$ 350,000		$ 350,000		$ 350,000
Subsidiaries | 4.15% Senior Notes, due January 23, 2030
Debt Instrument [Line Items]
Long-term debt	$ 988,220		$ 988,220		$ 987,788
Interest rate	4.15%		4.15%		4.15%
Principal Outstanding	$ 1,000,000		$ 1,000,000		$ 1,000,000
Subsidiaries | 6.25% Senior Debentures, due January 15, 2036
Debt Instrument [Line Items]
Long-term debt	$ 511,464		$ 511,464		$ 511,662
Interest rate	6.25%		6.25%		6.25%
Principal Outstanding	$ 500,000		$ 500,000		$ 500,000
Subsidiaries | 6.50% Senior Notes, due January 20, 2043
Debt Instrument [Line Items]
Long-term debt	$ 420,435		$ 420,435		$ 420,625
Interest rate	6.50%		6.50%		6.50%
Principal Outstanding	$ 400,000		$ 400,000		$ 400,000
Subsidiaries | Structured Notes
Debt Instrument [Line Items]
Long-term debt	819,509		819,509		686,170
Subsidiaries | Foursight Capital Credit Facilities
Debt Instrument [Line Items]
Long-term debt	123,579		123,579		0
Subsidiaries | Other
Debt Instrument [Line Items]
Long-term debt	86,756		86,756		81,164
Jefferies Group | Subsidiaries | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	$ 188,817		188,817		$ 183,539
Interest rate swaps | Subsidiaries | 4.85% Senior Notes, due January 15, 2027
Debt Instrument [Line Items]
Gain (loss) associated with an interest rate swap based on its designation as a fair value hedge			$ (43,800)	$ 22,800

Long-Term Debt (Narrative) (Det

Long-Term Debt (Narrative) (Details)	6 Months Ended
	May 31, 2019USD ($)Contract
Structured Notes | Jefferies Group
Debt Instrument [Line Items]
Principal amount of debt issued, net of retirements	$ 119,600,000
8.50% Senior Notes, due July 15, 2019
Debt Instrument [Line Items]
Interest rate	8.50%
8.50% Senior Notes, due July 15, 2019 | Jefferies Group
Debt Instrument [Line Items]
Repayments of debt	$ 36,000,000
Revolving Credit Facility | Jefferies Group
Debt Instrument [Line Items]
Debt face amount	$ 190,000,000
Secured Debt | Foursight Capital Credit Facilities
Debt Instrument [Line Items]
Number of warehouse credit commitment | Contract	2
Credit facility maximum amount	$ 175,000,000
Line of Credit | Foursight Capital Credit Facilities | Foursight Capital
Debt Instrument [Line Items]
Assets pledged for indebtedness	$ 148,300,000

Mezzanine Equity (Schedule Of R

Mezzanine Equity (Schedule Of Redeemable Noncontrolling Interests) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Redeemable Noncontrolling Interest [Roll Forward]
Beginning balance			$ 19,779
Income allocated to redeemable noncontrolling interests	$ 427	$ 22,108	289	$ 36,904
Increase in fair value of redeemable noncontrolling interests	1,657	(38,471)	1,121	(21,404)
Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustment prior to deconsolidation		(237,669)		(237,669)
Ending balance	$ 18,938		$ 18,938
National Beef
Redeemable Noncontrolling Interest [Roll Forward]
Beginning balance				412,128
Income allocated to redeemable noncontrolling interests		22,700		37,141
Distributions to redeemable noncontrolling interests				(70,681)
Increase in fair value of redeemable noncontrolling interests				21,404
Reversal of cumulative National Beef redeemable noncontrolling interests fair value adjustment prior to deconsolidation				(237,669)
Deconsolidation of National Beef				(162,323)
Ending balance		$ 0		$ 0

Mezzanine Equity (Narrative) (D

Mezzanine Equity (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended					6 Months Ended
	Mar. 31, 2013	May 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2017	Jun. 30, 2017	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018
Purchase Requirement [Line Items]
Redeemable noncontrolling interests		$ 18,900,000					$ 18,900,000		$ 19,800,000
Mandatorily redeemable convertible preferred shares redemption value		$ 125,000,000					$ 125,000,000		$ 125,000,000
Dividends per common share (in dollars per share)		$ 0.125	$ 0.125	$ 0.1	$ 0.10	$ 0.0625	$ 0.25	$ 0.2
Preferred stock dividend		$ 1,276,000		$ 1,171,000			$ 2,552,000	$ 2,343,000
3.25% Cumulative Convertible Preferred Shares
Purchase Requirement [Line Items]
Dividend rate on preferred stock	3.25%						3.25%
Mandatorily redeemable convertible preferred shares redemption value		$ 125,000,000					$ 125,000,000
Mandatorily redeemable preferred stock, number of shares in conversion		4,162,200					4,162,200
Mandatorily redeemable preferred stock, effective conversion price per share (in dollars per share)		$ 30.03					$ 30.03
Minimum dividend considered for additional quarterly payments (in dollars per share)		0.0625					$ 0.0625
Preferred stock dividend							$ 2,600,000	$ 2,300,000
Mandatorily redeemable preferred shares callable price per share (in dollars per share)		$ 1,000					$ 1,000

Compensation Plans (Details)

Compensation Plans (Details) - USD ($) shares in Thousands, $ in Thousands	May 31, 2019	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 13,100	$ 12,800	$ 24,886	$ 25,198
Tax benefit for issuance of share-based awards		3,400	$ 3,100	6,300	$ 6,000
Total unrecognized compensation cost related to nonvested share-based awards	$ 99,400	$ 99,400		$ 99,400
Employee service share-based compensation, unrecognized compensation costs on nonvested awards, weighted average period of recognition	3 years
Potential maximum increase to common shares outstanding from restricted stock and other shares (in shares)	21,484	21,484		21,484
Restricted cash awards, cost expected to be recognized	$ 550,900	$ 550,900		$ 550,900
Restricted cash awards, cost expected to be recognized, period	3 years
Sign-on and Retention Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Amortization period				4 years
Other Shares Issuable
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other shares issuable (in shares)	909	909		909
Future Service Required | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, nonvested (in shares)	1,883	1,883		1,883
Future Service Required | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, nonvested (in shares)	6,010	6,010		6,010
No Future Service Required | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, vested (in shares)	14,565	14,565		14,565

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (Summary Of Accumulated Other Comprehensive Income, Net Of Taxes) (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	$ 9,877,361	$ 10,079,257	$ 10,567,441	$ 10,138,979
Net unrealized gains on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	33	542,832
Net unrealized foreign exchange losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	(202,595)	(193,402)
Net unrealized gains (losses) on instrument specific credit risk
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	14,916	(5,728)
Net unrealized gains on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	0	470
Net minimum pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	(55,178)	(55,886)
AOCI Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Equity	$ (242,824)	$ 288,286

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income Reclassifications) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 1,510,371	$ 1,243,826	$ 2,705,383	$ 2,404,937
Reclassification for the period, net of tax			542,447	14,569
Net unrealized losses on available for sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, tax			(545,054)	37
Net unrealized foreign exchange losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, tax			0	(16)
Net unrealized gains (losses) on instrument specific credit risk
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, tax			(166)	78
Net unrealized gains on cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, tax			161	0
Amortization of defined benefit pension plan actuarial gains (losses)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, net of tax			(708)	(919)
Reclassification for the period, tax			(241)	(339)
Other pension
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification for the period, net of tax			0	(5,344)
Reclassification for the period, tax			0	0
Reclassification out of Accumulated Other Comprehensive Income | Net unrealized foreign exchange losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other revenues and Selling, general and other expenses			0	20,459
Other
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	144,206	90,021	198,037	143,989
Other | Reclassification out of Accumulated Other Comprehensive Income | Net unrealized losses on available for sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues and income tax provision (benefit)			543,178	103
Other | Reclassification out of Accumulated Other Comprehensive Income | Net unrealized gains on cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues			470	0
Principal transactions
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues	$ 240,189	$ 53,755	486,371	199,418
Principal transactions | Reclassification out of Accumulated Other Comprehensive Income | Net unrealized gains (losses) on instrument specific credit risk
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Revenues			$ (493)	$ 270

Accumulated Other Comprehensi_5

Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) $ in Thousands, € in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2018EUR (€)	May 31, 2019USD ($)	Jun. 30, 2018USD ($)	May 31, 2019USD ($)	Jun. 30, 2018USD ($)	Feb. 28, 2019USD ($)
Defined Benefit Plan Disclosure [Line Items]
Recognition of accumulated other comprehensive income lodged taxes		$ 544,600		$ 544,583	$ 0
Lodged tax effect						$ 544,600
Unrealized tax benefit from sale of available for sale portfolio, realized during period		$ 544,677	$ (42)	$ 545,054	(37)
German Plan | Pension Plan | Jefferies Bache Limited
Defined Benefit Plan Disclosure [Line Items]
Payment to transfer defined benefit obligation and insurance contracts | €	€ 6.5
Reclassification adjustment from AOCI related to pension plan					$ 5,300

Revenues from Contracts with _3

Revenues from Contracts with Customers (Schedule of Components of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 750,206	$ 834,553	$ 1,320,193	$ 1,562,969
Revenue from other sources	760,165	409,273	1,385,190	841,968
Total revenues	1,510,371	1,243,826	2,705,383	2,404,937
Commissions and other fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	159,685	157,704	306,819	305,606
Total revenues	159,685	157,704	306,819	305,606
Investment banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	430,087	500,297	715,683	940,288
Total revenues	430,087	500,297	715,683	940,288
Manufacturing revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	90,237	114,735	165,662	213,100
Total revenues	90,237	114,735	165,662	213,100
Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	70,197	61,817	132,029	103,975
Principal transactions
Disaggregation of Revenue [Line Items]
Revenue from other sources	240,189	53,755	486,371	199,418
Total revenues	240,189	53,755	486,371	199,418
Interest income
Disaggregation of Revenue [Line Items]
Revenue from other sources	445,967	327,314	832,811	602,536
Total revenues	445,967	327,314	832,811	602,536
Other
Disaggregation of Revenue [Line Items]
Revenue from other sources	$ 74,009	$ 28,204	$ 66,008	$ 40,014

Revenues from Contracts with _4

Revenues from Contracts with Customers (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 750,206	$ 834,553	$ 1,320,193	$ 1,562,969
Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	638,783	735,430	1,087,875	1,384,861
Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	92,783	79,068	196,510	140,651
Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,640	20,055	35,808	37,457
Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	602,527	671,219	1,049,921	1,270,728
Reportable Segments | Jefferies Group | Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	491,366	572,376	818,123	1,093,230
Reportable Segments | Jefferies Group | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	92,560	78,861	196,053	140,189
Reportable Segments | Jefferies Group | Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,601	19,982	35,745	37,309
Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	147,767	163,734	270,552	292,641
Reportable Segments | Merchant Banking | Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	147,505	163,454	270,032	292,031
Reportable Segments | Merchant Banking | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	223	207	457	462
Reportable Segments | Merchant Banking | Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	39	73	63	148
Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Reportable Segments | Corporate | Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Reportable Segments | Corporate | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Reportable Segments | Corporate | Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(88)	(400)	(280)	(400)
Consolidation adjustments | Americas
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(88)	(400)	(280)	(400)
Consolidation adjustments | Europe, Middle East and Africa
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Consolidation adjustments | Asia
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Equities
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	164,273	159,960	316,142	311,590
Equities | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	164,361	160,360	316,422	311,990
Equities | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Equities | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Equities | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	(88)	(400)	(280)	(400)
Fixed Income
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,529	4,546	6,597	7,504
Fixed Income | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,529	4,546	6,597	7,504
Fixed Income | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fixed Income | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Fixed Income | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Capital markets
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	251,533	283,315	356,647	532,149
Investment Banking - Capital markets | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	251,533	283,315	356,647	532,149
Investment Banking - Capital markets | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Capital markets | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Capital markets | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Advisory
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	178,554	216,982	359,036	408,139
Investment Banking - Advisory | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	178,554	216,982	359,036	408,139
Investment Banking - Advisory | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Advisory | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Investment Banking - Advisory | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Asset Management
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,550	6,016	11,219	10,946
Asset Management | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,550	6,016	11,219	10,946
Asset Management | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Asset Management | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Asset Management | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Manufacturing revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	90,237	114,735	165,662	213,100
Manufacturing revenues | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Manufacturing revenues | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	90,237	114,735	165,662	213,100
Manufacturing revenues | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Manufacturing revenues | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Oil and gas revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	47,652	39,905	84,017	60,235
Oil and gas revenues | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Oil and gas revenues | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	47,652	39,905	84,017	60,235
Oil and gas revenues | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Oil and gas revenues | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other revenues
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	9,878	9,094	20,873	19,306
Other revenues | Reportable Segments | Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other revenues | Reportable Segments | Merchant Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	9,878	9,094	20,873	19,306
Other revenues | Reportable Segments | Corporate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other revenues | Consolidation adjustments
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0

Revenues from Contracts with _5

Revenues from Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018
Disaggregation of Revenue [Line Items]
Receivables related to revenue from contracts with customers	$ 289.9		$ 289.9		$ 250.6
Deferred revenue	21		21		14.2
Deferred revenue, revenue recognized	1.8	$ 9.6	9.4	$ 14.5
Capitalized contract cost	3.7		3.7		$ 4.7
Expenses related to capitalized costs to fulfill a contract	1.8	1.2	3.4	1.3
Jefferies Group
Disaggregation of Revenue [Line Items]
Revenue related to performance obligation satisfied	15.3	15	23	17.1
Revenue associated with distribution services, a portion of which related to prior period	$ 4.8	$ 4.3	$ 9.8	$ 8.9

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Feb. 28, 2019	Nov. 30, 2018
Income Taxes [Line Items]
Unrecognized tax benefits	$ 260,000		$ 260,000			$ 251,400
Interest included in unrecognized tax benefits	61,600		61,600			54,100
Benefit for income taxes	488,797	$ (9,598)	486,495	$ 38,831
Recognition of accumulated other comprehensive income lodged taxes	544,600		544,583	0
Lodged tax effect					$ 544,600
Tax Cuts and Jobs Act of 2017, measurement period adjustment, income tax benefit			6,700
Decrease of income tax provision				$ 43,900
Jefferies Group
Income Taxes [Line Items]
Unrecognized tax benefits	$ 189,200		$ 189,200			$ 174,900

Common Share and Earnings Per_3

Common Share and Earnings Per Common Share (Earnings Per Share Computation) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Numerator for earnings per share:
Net income attributable to Jefferies Financial Group Inc. common shareholders	$ 670,764	$ 725,529	$ 715,575	$ 850,054
Allocation of earnings to participating securities	(4,086)	(3,870)	(4,241)	(3,831)
Net income attributable to Jefferies Financial Group Inc. common shareholders for basic earnings per share	666,678	721,659	711,334	846,223
Adjustment to allocation of earnings to participating securities related to diluted shares	43	37	34	29
Mandatorily redeemable convertible preferred share dividends	1,276	0	2,552	0
Net income attributable to Jefferies Financial Group Inc. common shareholders for diluted earnings per share	$ 667,997	$ 721,696	$ 713,920	$ 846,252
Denominator for earnings per share:
Weighted average common shares outstanding	293,600,000	342,719,000	299,067,000	349,647,000
Denominator for basic earnings per share – weighted average shares	307,010,000	352,049,000	311,108,000	359,237,000
Mandatorily redeemable convertible preferred shares (in shares)	4,162,000	0	4,162,000	0
Denominator for diluted earnings (loss) per share (in shares)	312,527,000	356,075,000	317,736,000	362,685,000
Weighted average shares of participating securities (in shares)	1,881,600	1,887,100	1,856,400	1,603,500
Restricted Stock with Future Service Required
Denominator for earnings per share:
Weighted average shares of restricted stock outstanding with future service required	(1,873,000)	(1,868,000)	(1,851,000)	(1,578,000)
Restricted Stock Units with No Future Service Required
Denominator for earnings per share:
Weighted average RSUs outstanding with no future service required (in shares)	15,283,000	11,198,000	13,892,000	11,168,000
Stock options
Denominator for earnings per share:
Dilutive effect of share-based payment awards (in shares)	0	7,000	0	18,000
Restricted Stock Units | Senior Executive Compensation Plan
Denominator for earnings per share:
Dilutive effect of share-based payment awards (in shares)	1,355,000	4,019,000	2,466,000	3,430,000

Common Share and Earnings Per_4

Common Share and Earnings Per Common Share (Narrative) (Details) - USD ($) shares in Thousands	6 Months Ended
	May 31, 2019	Jul. 01, 2019	Jan. 31, 2019
Earnings Per Share [Abstract]
Share repurchase program, authorized amount			$ 500,000,000
Stock repurchased during period (in shares)	17,350
Stock repurchased during period	$ 344,500,000
Remaining authorized repurchase amount	$ 155,500,000
Subsequent Event
Earnings Per Share [Line Items]
Number of shares authorized to be repurchased		9,250

Commitments, Contingencies an_3

Commitments, Contingencies and Guarantees (Commitments and Contingencies) (Details) $ in Millions	May 31, 2019USD ($)
Commitments And Guarantee Obligations [Line Items]
2019	$ 7,446.2
2020	380.4
2021 and 2022	199.1
2023 and 2024	5.6
2025 and Later	23.9
Maximum Payout	$ 8,055.2
Guarantor obligation settled period	3 days
Equity commitments
Commitments And Guarantee Obligations [Line Items]
2019	$ 17.4
2020	127.9
2021 and 2022	1.3
2023 and 2024	0
2025 and Later	19.1
Maximum Payout	165.7
Loan commitments
Commitments And Guarantee Obligations [Line Items]
2019	0
2020	252.5
2021 and 2022	55
2023 and 2024	5.6
2025 and Later	0
Maximum Payout	313.1
Underwriting commitments
Commitments And Guarantee Obligations [Line Items]
2019	264.2
2020	0
2021 and 2022	0
2023 and 2024	0
2025 and Later	0
Maximum Payout	264.2
Forward starting reverse repos
Commitments And Guarantee Obligations [Line Items]
2019	4,410.9
2020	0
2021 and 2022	0
2023 and 2024	0
2025 and Later	0
Maximum Payout	4,410.9
Forward starting repos
Commitments And Guarantee Obligations [Line Items]
2019	2,635.7
2020	0
2021 and 2022	0
2023 and 2024	0
2025 and Later	0
Maximum Payout	2,635.7
Other unfunded commitments
Commitments And Guarantee Obligations [Line Items]
2019	118
2020	0
2021 and 2022	142.8
2023 and 2024	0
2025 and Later	4.8
Maximum Payout	265.6
Forward starting securities purchased under agreements to resell settled
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	4,401.6
Forward starting securities purchased under agreements to repurchase settled
Commitments And Guarantee Obligations [Line Items]
Maximum Payout	$ 2,136

Commitments, Contingencies an_4

Commitments, Contingencies and Guarantees (Narrative) (Details) - USD ($)	6 Months Ended
	May 31, 2019	Nov. 30, 2018
Commitments Contingencies And Guarantees [Line Items]
Loan commitments outstanding to clients	$ 60,600,000
Fair value of derivative contracts meeting the definition of a guarantee	$ 239,300,000
Standby Letters of Credit
Commitments Contingencies And Guarantees [Line Items]
Expiration period maximum	1 year
Jefferies Finance
Commitments Contingencies And Guarantees [Line Items]
Line of credit facility, commitment of Jefferies, funded	$ 0	$ 0
Line of credit facility commitment of Jefferies	250,000,000	$ 250,000,000
Berkadia
Commitments Contingencies And Guarantees [Line Items]
Surety policy issued	$ 1,500,000,000
Reimbursement of losses incurred, maximum percentage	50.00%
Aggregate amount of commercial paper outstanding	$ 1,470,000,000
Jefferies Group | Standby Letters of Credit
Commitments Contingencies And Guarantees [Line Items]
Letters of credit	36,900,000
Other subsidiaries | Standby Letters of Credit
Commitments Contingencies And Guarantees [Line Items]
Letters of credit	1,600,000
Jefferies Capital Partners LLC and Its Private Equity Funds
Commitments Contingencies And Guarantees [Line Items]
Equity commitments	17,900,000
Other Investments
Commitments Contingencies And Guarantees [Line Items]
Equity commitments	$ 41,400,000

Commitments, Contingencies an_5

Commitments, Contingencies and Guarantees (Guarantees) (Details) - Derivative Notional Amount $ in Millions	May 31, 2019USD ($)
Derivative contracts – non-credit related
Guarantee Obligations [Line Items]
2019	$ 8,725.7
2020	2,869.3
2021 and 2022	4,410.2
2023 and 2024	3,263.9
2025 and Later	326.1
Notional/ Maximum Payout	19,595.2
Written derivative contracts – credit related
Guarantee Obligations [Line Items]
2019	0
2020	32.9
2021 and 2022	0
2023 and 2024	64.5
2025 and Later	0
Notional/ Maximum Payout	97.4
Derivatives
Guarantee Obligations [Line Items]
2019	8,725.7
2020	2,902.2
2021 and 2022	4,410.2
2023 and 2024	3,328.4
2025 and Later	326.1
Notional/ Maximum Payout	$ 19,692.6

Net Capital Requirements (Detai

Net Capital Requirements (Details) - Jefferies LLC $ in Millions	May 31, 2019USD ($)
Net Capital Requirements [Line Items]
Net capital	$ 1,395.9
Excess net capital	$ 1,290.1

Other Fair Value Information (D

Other Fair Value Information (Details) - USD ($) $ in Thousands	May 31, 2019	Nov. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term borrowings	$ 510,435	$ 387,492
Long-term debt	7,860,984	7,617,563
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes and loans receivable	737,461	680,015
Short-term borrowings	510,435	387,492
Long-term debt	7,041,475	6,931,393
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes and loans receivable	739,607	676,152
Short-term borrowings	510,435	387,492
Long-term debt	$ 7,169,833	$ 6,826,503

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018	Nov. 30, 2018
Private Equity Related Funds
Related Party Transaction [Line Items]
Loans to and/or equity investments in related funds	$ 31.2		$ 31.2		$ 35.5
Net gains (losses) from private equity related funds	4	$ 3	(0.1)	$ 10
Officers and Employees
Related Party Transaction [Line Items]
Loans outstanding to related party	46.9		46.9		49.3
Berkadia | Affiliated Entity | Jefferies Group
Related Party Transaction [Line Items]
Purchase commitment	543.4		543.4		723.8
FXCM | Payables, expense accruals and other liabilities | Affiliated Entity | Jefferies Group
Related Party Transaction [Line Items]
OTC foreign exchange contracts	$ 14.2		$ 14.2		$ 9.9

Discontinued Operations (Narrat

Discontinued Operations (Narrative) (Details) $ in Thousands	Jun. 05, 2018USD ($)	Jun. 30, 2018USD ($)	May 31, 2019USD ($)director	Jun. 30, 2018USD ($)	May 31, 2019USD ($)director	Jun. 30, 2018USD ($)	Jun. 04, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income allocated to redeemable noncontrolling interests			$ 427	$ 22,108	$ 289	$ 36,904
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax, Attributable to Parent				85,500		140,000
Income related to associated companies			22,170	33,353	49,483	65,453
Consolidated income before income taxes			183,479	37,515	232,796	75,278
Gain on disposal of discontinued operations, after-tax			$ 0	643,921	$ 0	643,921
National Beef
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage							79.00%
Equity method investment, ownership percentage	31.00%		31.00%		31.00%
Income related to associated companies		$ 24,400	$ 34,946	24,401	$ 62,051	24,401
Distributions received		13,100			$ 54,900
National Beef
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage			100.00%		100.00%
Number of directors appointed by Company | director			2		2
Lockup period related to divestiture of businesses	5 years
Income allocated to redeemable noncontrolling interests				22,700		37,141
Consolidated income before income taxes		$ 80,400	$ 119,300		$ 213,800
Marfrig Global Foods S.A.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage	51.00%
Ownership percentage to be acquired further from other equity owners	3.00%
Discontinued operations, disposed of by sale | National Beef
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage	48.00%
Cash from sale of subsidiary	$ 907,700
Pre-tax gain on disposal of discontinued operations				873,500		873,500
Gain on disposal of discontinued operations, after-tax				643,900		643,900
Pre-tax gain on disposal of discontinued operations, portion related to remeasurement to fair value				$ 352,400		$ 352,400

Discontinued Operations (Summar

Discontinued Operations (Summary of discontinued operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Expenses:
Income tax provision	$ 0	$ 31,111	$ 0	$ 47,045
Income from discontinued operations, net of income tax provision	$ 0	77,106	$ 0	130,063
National Beef | Discontinued operations, disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		1,356,713		3,142,071
Expenses:
Compensation and benefits		7,207		17,414
Cost of sales		1,214,207		2,884,983
Interest expense		2,207		4,316
Depreciation and amortization		18,440		43,959
Selling, general and other expenses		6,435		14,291
Total expenses		1,248,496		2,964,963
Income from discontinued operations before income taxes		108,217		177,108
Income tax provision		31,111		47,045
Income from discontinued operations, net of income tax provision		77,106		130,063
National Beef | Discontinued operations, disposed of by sale | Beef processing services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		1,355,691		3,137,611
National Beef | Discontinued operations, disposed of by sale | Interest income
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		63		131
National Beef | Discontinued operations, disposed of by sale | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		$ 959		$ 4,329

Segment Information (Narrative)

Segment Information (Narrative) (Details) $ in Thousands	3 Months Ended			6 Months Ended
	May 31, 2019USD ($)	Sep. 30, 2018	Jun. 30, 2018USD ($)	May 31, 2019USD ($)Segment	Jun. 30, 2018USD ($)	Oct. 01, 2018	Jun. 05, 2018	Jun. 04, 2018
Segment Reporting Information [Line Items]
Number of reportable segments | Segment				3
Interest expense	$ 23,138		$ 24,279	$ 46,156	$ 45,777
Parent Company interest
Segment Reporting Information [Line Items]
Interest expense	$ 14,800		14,800	$ 29,500	29,500
Discontinued operations, disposed of by sale | National Beef
Segment Reporting Information [Line Items]
Ownership percentage							48.00%
Disposal group, disposed of by sale, not discontinued operations | Garcadia
Segment Reporting Information [Line Items]
Percentage of equity method investment for sale		100.00%
National Beef
Segment Reporting Information [Line Items]
Ownership percentage								79.00%
Equity method investment, ownership percentage	31.00%			31.00%			31.00%
Berkadia
Segment Reporting Information [Line Items]
Equity method investment, ownership percentage	50.00%			50.00%		50.00%
Merchant Banking | Reportable Segments
Segment Reporting Information [Line Items]
Interest expense	$ 8,400		$ 9,500	$ 16,600	$ 16,300

Segment Information (Schedule O

Segment Information (Schedule Of Segment Reporting Information, By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	Jun. 30, 2018	May 31, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Net Revenues	$ 1,101,657	$ 911,159	$ 1,930,100	$ 1,806,594
Consolidated income before income taxes	183,479	37,515	232,796	75,278
Depreciation and amortization	36,786	31,905	70,720	60,065
Parent Company interest
Segment Reporting Information [Line Items]
Consolidated income before income taxes	(14,766)	(14,750)	(29,528)	(29,496)
LAM and Berkadia Transferred
Segment Reporting Information [Line Items]
Net Revenues		15,800		(20,800)
Consolidated income before income taxes		29,800		9,100
Reportable Segments
Segment Reporting Information [Line Items]
Net Revenues	1,098,149	911,968	1,924,398	1,810,182
Consolidated income before income taxes	192,477	50,592	253,824	102,548
Reportable Segments | Jefferies Group
Segment Reporting Information [Line Items]
Net Revenues	901,851	822,557	1,587,569	1,643,803
Consolidated income before income taxes	155,138	121,865	217,723	244,603
Depreciation and amortization	18,968	17,288	36,630	33,654
Reportable Segments | Merchant Banking
Segment Reporting Information [Line Items]
Net Revenues	187,324	86,417	323,662	160,318
Consolidated income before income taxes	51,224	(50,058)	71,329	(99,315)
Depreciation and amortization	16,951	13,740	32,368	24,664
Reportable Segments | Corporate
Segment Reporting Information [Line Items]
Net Revenues	8,974	2,994	13,167	6,061
Consolidated income before income taxes	(13,885)	(21,215)	(35,228)	(42,740)
Depreciation and amortization	867	877	1,722	1,747
Consolidation adjustments
Segment Reporting Information [Line Items]
Net Revenues	3,508	(809)	5,702	(3,588)
Consolidated income before income taxes	$ 5,768	$ 1,673	$ 8,500	$ 2,226